[Jims5543]

I never said it was hard to swap the tranny and rear in addition to the engine I just said it had to be done, the entire drivetrain needs to be swapped, especially since you would want to go with a 4 speed and loose the 3 speed as well and that was in addition to the front springs having to be changed.

Then you will most likely want to do the front spindles since you will have 5 lugs in the rear.

This is all assuming he will get the HP bug and tweek the V8 some.

My buddy had a 6 cyl Mustang when I had my 68. I had a 302, long tube headers, Holly 4bbl, and a mild/medium cam, I would d-e-s-t-r-o-y my friends Mustang. I cannot imagine your car would keep up either. Maybe a bone stock 289 with an Auto tranny, maybe.

I am just offering an opinion based on what I see, not much has changed in the last 40 years, to this day the 6cyl models are not as popular as the GT models.