What do I have 352, 390 or 428?

I was recently gave an engine. I was told that it was possibly a 390 or a 428. I called a dealership and gave them the numbers off of the distributor and manifold and they told me that it was a 352 manifold and Distributor. But the guy that gave it to me told me that the person he got it from put those on the engine. The Cylinder head casting numbers are D2TEAA on both heads. The casting numbers that I could find are 89-352on the front of the block and 51-352A on the back. I also found a number on theblock under neath where the starter mounts 2817-78 not sure if that means anything. The numbers I found under the oil filter are W1 - RH28. Would Like to know what I have so I can order parts to begin rebuilding it.

Casting numbers tell when a part was ORIGINALLY designed and what car it was
ORIGINALLY designed for. This does not mean that the part was not used on other
cars. For example, casting number C8OE-9430-D is an exhaust manifold for a 428
CJ Fairlane; however, it was also used on 428 CJ Mustangs.
Example:
The breakdown of casting number C8OE-9430-D is easy using the charts below:
C = Decade of 1960
8 = Year of the decade (8th year of 1960), 1968
O = Fairlane Car line / Manufacture code
E = Engine engineering department
9430 = Basic number for an exhaust manifold
N = Design change
Casting Number Breakdown Charts
Decade of Manufacture:
A = 1940
B = 1950
C = 1960
D = 1970
E = 1980
Year of Decade
The year of the decade is determined by adding a number (0-9) to the letter of
the decade. Example: C6 would be 1966, D0 would be 1970, D1 would be 1971.
Car Line/ Manufacture Codes
A = Galaxie
D = Falcon (60-69)
F = Outside USA, Trans Am racing
G = Comet / Montego
J = Industrial
M = Mercury
O = Fairlane / Torino
P = Autolite / Motorcraft
R = Rotunda
S = Thunderbird
T = Truck
V = Lincoln (61 - current)
Z = Mustang
Engineering Departments
A = Chassis
B = Body
E = Engine
F = Engine accessories
J = Autolite (67-72)
P = Automatic transmission
R = Manual transmission
W = Axle
X = Muscle parts program
Y = Lincoln / Mercury service parts
Z = Ford service parts
Basic Number
These identify the part, such as 6090 being a cylinder head or 9430 being an
exhaust manifold.
Design Change
A Basic part is made to fit many applications. Example:
DOZZ-7528-C is a clutch bar for a 390/428
DOZZ-7528-D is a clutch bar for a 351 W
DOZZ-7529-E is a clutch bar for a 302 Boss
Reading Casting Dates
Casting dates:
Casting dates show the exact day, month and year a certain part was made or
cast. The typical casting date looks like "6M08".
Breaking down a casting date:
6 = The year of the decade. "6" for 1976.
M = The letter of the month. (December)
08 = The day of the month. (8th)
First year month codes:
ABCDEFGHIJKLM
JanFebMarAprMayJunJulAugN/ASepOctNovDec

Second year month codes:
NOPQRSTUVWXYZ
JanN/AFebMarAprMayJunJulAugSepOctNovDec

How do casting numbers appear?
Most casting numbers are stamped into the part itself, other have the number
molded on the part. Some casting numbers can be ink stamped while others are
printed on paper, which is then wraped around the part.
FE Casting Numbers
Blocks (C1AE8015C)
390 cid
C1AE-CC1AE-GC1AE-VC2AE-BC
C2AE-BEC2AE-BRC2AE-BSC2SE
C3SE-AC3AE-KYC3ME-BC3AE-AY
C4AE-DC4AE-FC5AE-AC5AE-B
C6MEC6ME-AC8AE-AC8AE-C
C8AE-ED3TE-1D3TE-ACD3TE-HA
D4TE-ACD7TE-BA

406 cid
C2AE-JC2AE-KC2AE-VC2AE-BD
C3AE-DC3AE-V

427 cid
C3AE-MC3AE-ABC3AE-ZC4AE
C4AE-AC5AE-AC5AE-EC5AE-D
C5AE-HC6AE-BC5JE-DC6JE-B
C6AE-CC6AE-DC7AE-AC7JE-A
C8AE-AC8AE-BC8AE-H

428 cid
C6AE-AC6AE-BC6AE-FC6ME
C6ME-AC7MEC7ME-AC8ME

Crankshafts
390 cid [3.78" stroke]
2UC3AE-DC4TE-6303-B
3UC3AE-EC4TZ-A
C1AEC3AE-UC4TZ-B
C1AE-AC3AZC6AE-A
C2AE-BC4AE-BC6TE-6303-C
C2AE-DC4AE-CC6TE-6303-E
C3AEC4AE-DD2TE-6303EA
C3AE-6303-EC4AE-A
C3AE-BC4AZ-A
C3AE-CC4AZ-J

406 cid [3.78" stroke]
2UC3AE-BC4AE-C
3UC3AE-CC4AE-D
C1AEC3AE-DC4AE-A
C1AE-AC3AE-EC4AZ-A
C2AE-BC3AE-UC4AZ-J
C2AE-DC3AZC4AZ-J
C3AEC4AE-BC4TZ-A
C3AE-6303-E C4TZ-B

410 cid [3.98" stroke]
1VAC8ME-AC9ZE-CIU
C6MEC9ZE-BC9ZE-DIUB

427 cid [3.78" stroke]
2UC3AE-BC4AE-C
3UC3AE-CC4AE-D
C1AEC3AE-DC4AE-A
C1AE-AC3AE-EC4AZ-A
C2AE-BC3AE-UC4AZ-J
C2AE-DC3AZC4AZ-J
C3AEC4AE-BC4TZ-A
C3AE-6303-E C4TZ-B

428 cid [3.98" stroke]
1VAC8ME-AC9ZE-CIUC2VE
C6MEC9ZE-BC9ZE-DIUBC6ME

Just my 2 cents, but if your planning on rebuilding it the first step before you order parts is to tear it down to determine what you have and the condition the parts are in.

Even if you know the original displacement of the engine without a tear down you don't know if it has been bored or wether the crank has been turned (or if they need to be).