Hey great Q
I had a 72 coupe for my first car and that looks like a late 71 or 72 though you have 73, 74 indicator lenses on it now.
I put a 327 in mine (was 253) but couldn't get insurance after that so I sold it when I got married.
Have missed it ever since.
Great to see one looking so good
Andy
Your right it's a 71 model how can you tell? I didn't even know they had different indicators lol. Once the front bar gets restored I'll be putting in new ones.