There's about 25" from radiator support to firewall which would be a close fit for a 302. At least the dizzy is in the front. Novak makes universal motor mounts to put your motor into CJ's that should work if you cut off the stock mounts on the monty frame. I'd get out the hammer to the firewall when the stock motor is out to move that as far back as possible. The main problem and probable project killer is that most Fords use a passenger drop TC. It would be easier to use 700R and TC out of an S10 blazer and adapt the 302 to that than try to get a C6 to fit a driver's drop TC. Just my 0.02. I have not ever seen a Ford/ Mitsu swap and there's probably a good reason for that.