For all you Mustang Gurus

[buccaneers_97]

I'm just throwing some ideas around in my head here. I was going to rebuild a 302 for my 1975 Mustang, however, I am missing so many parts from my 302 right now (Carb, intake, pushrods, starter, bellhousing, etc.). I do, however, have a complete 410 engine from a late 60s mercury. That is just a 390 block with a 428 crank. I would like to know if I can fit that 390 block into my 75 Stang. As of right now, it has a 2.3L 140 cu. in. engine, and there is plenty of room in there to upgrade. I put a rod through the block on that engine though. I just want another engine in there so I can drive it. What good does a black beauty do me if I can't drive it? Any help here is greatly appreciated, and I'm sure Ill have more questions later too. Thanks in advance for your help. Mikey