Re: Changing engines from one make to another...
A Falcon 6 wont fit (too long), but a Rotary will and so will a V8.
If you still want it street legal (and drivable) the rotary is the only option.
You could probably get a EFI Turbo Rotary (Series 4 or 5 RX7 motor) up and running in it for around $5k, maybe less. Would make a great sleeper, and would run atleast mid-high 14s, probably even 13s wouldnt be out of the question.
1993 ED XR6 M5 (1 of 329)
Turbo on the way!!
1993 EBII Fairmont (Now wrecking, PM if you want any parts)
1988 Nissan R31 Skyline