Need suggestions for tire sizes.

I run a 225/60 on the same rim dimensions on the front of my 71 dart and I like it. The rear I'm not sure but that backspacing may be a problem for you unless you have a lot of room. Put the rear on some jackstands and throw one of those 15 x 8's on there and start measuring to be sure.

Yea I am going to have to make time to do that tomorrow. I was doing some eyeball measurements with a tape measure and it looks like they will come out almost even with the upper lip of the fender. It looks do able I think and not look to goofey but what would be a good number to leave between the fender to the top of the tire? Or how much suspension travel should I account for would be a better way of asking?