Hello,
Don't be to perplex about the motor and badging. Truth is most of the "Real" 427 Cobras that carry a 427 badge are actually 428 PI Motors. Ole Shel didn't want to fork out the big bucks for the 427 S.O. as well as supply problems for the motor. I have even read cliams that toward the end of production some cars had 429's. There are also high-bread racing models that had 427 bodies and badging, but do to regulations of class engine size used small blocks and one with a 390. I wouldn't let if worry you too much. Get a good book on the history of SAI and you will find all kinds of interesting mixes. As for the "It's not the right motor" crowd, most of that kind of talk is out of jealousy. Remember also you have a replica. You can do with it what you want as long as it makes you happy. I have spent a lot of $$ and time on my build trying to create a perfect copy (which it is not) of a competition version car. It makes me happy, so I could careless what others think (unless they like it of course
).
---Mike