The “VO3O8EI” stamping is key here for engine ID:
V = Flint Assembly Plant
03 = March
08 = 8th day of the month
EI was only used in 1968 for 250 and 275 horsepower 327 engines (both horsepower ratings had 4 barrel bolted carburetors) and all were matched to Powerglide transmissions.

18K180469 is a partial VIN. It needs to be looked at as 1 / 8 / K / 180469;
The 1 is the last digit of the number of the body type:
15411 – was used for 2 door Biscayne V8
15611 – was used for 2 door Bel Air V8
The 8 indicates 1968 model year.
K = Kansas, MO assembly plant
180469 = production number. Chevy II, Chevelle started with 300001, Corvair and Corvette started with 700001 and all other Chevrolet cars started with 100001 – so this was number 180469 off the line.

It would appear that you have a 1968, 327 from a 2 door Biscayne or Bel Air. Nothing special, just one of a gazillion 327 engines produced. If you can get the number off the heads we can tell if it’s the 250 or the 275 horsepower model.