If you don't want to cut, roll, or move anything my suggestion would be either 17x8's or 18x8's front and rear. With those you could run 245/45/17's or 245/40/18's all the way around. You can go bigger up front, but in the back anything bigger than a 245 starts cutting it close as far as rolling and trimming things, and it does depend on the body tolerances of your car.
In the front you'd want between 5.25" and 5.6" backspace on the 17x8's. If you went 18x8's you could run 5.25" to about 6", the 18's clear the inner tie rod so you can run more backspace than 17's. That would be for the 73+ based mopar disks, other brake kits might change that depending on the track width changes. In the back it would depend on what axle you have back there, which you haven't mentioned.
