First post! Help me answer a few 67 GTO questions.
Like I said, this is my first post on this forum, thrilled to have a Goat !
I have purchased a two owner 1967 2 door HT, originally equipped with the 400 HO/ Hurst His/Her automatic. The original 400 is long gone, and now has a 389 in it. My question is, down the road, if I decided to try to locate a 67 400 HO (YZ code I believe) for the GTO, what are the acceptable date variances between car and engine? I realize that it wouldn't be the original numbers matching but could be "correct". Also, what are the chances of finding a YZ code 400, and were they exclusive to GTO's? Thanks in advance.