The '67-'68 and up Mustangs can accomodate the FE blocks, but the '64-'66 cannot without shock tower modification. Even in the 67-up cars, the FE was a very tight fit. Poke around, and you will see the troubles and hassles folks run into just trying to put a 351W in a '64-'66!
I agree with thetvirus, this is not going to happen without the Mustang II front end, as this eliminates the shock towers. I am also quite sure the transmission tunnel would need a beating as well, since that C6 is a big pig and certainly bigger than the little C4 that originally went there.
It's cool you got that drivetrain, but I think you are in for lots and lots of extensive work if you want to make it happen. I suppose it all depends on how badly you really want to have this drivetrain, or was it just a thought?
Get back to us,
1966 289-2V C-4 Convertible. 2nd owner, resurrected rustbucket. Factory console and power top, conversion to P/B with dual res MC.
1990 GT 25th Anniversary 5.0 AOD Convertible. SOLD