you could be right about the small town thing and small budget, I live on the Eastern shore of MD what western MD's call poor country, and for the most part it is. Until the beach boom all of the eastern shore was nothing but small towns the big city of Salisbury has only 30k residents. Another thing is the motor is a 302 I understand what you are saying but when I checked the stamp on the pistons it said 302 right on them, not to mention there was no over bore. So from that being said I also checked the cam and matched it to the one layin in my 71 almost identical. IT is very intriguing, I believe it is more of a police issued option, the website http://www.gearheadracing.com/Refere...ingNumbers.htm states in one spot the O stands for fairlaine and then in one spot it states its a galaxie or ltd. I do not no how familiar you guys are with casting numbers but I have put them down one code 3F18477 (7?) The second which I used to decode it was D2OE-6015-AB-5A27 If you get a chance check out that sight maybe you can decifer what they are saying. Honestly it doesnt seem hard to believe. In my area finding a vintage mustang is a matter of driving around on the back roads. Then you can find one, generally a lot have an fmx or c4 in them. 351's are less to find usually they are yanked. my original motor was a 351 but was yanked a long time ago. Most mach 1s did have the 351's but some if not a good bit did have a 302. Rare odd balls seem common round here but we live in an area where rust on new cars can set in reel fast, very salty and marshy air. If any body could make sence of these codes Id appreciate it thanx.