Demon, Duster, Dart Sport wheel combos

"I want to put 15X10 rears on and have seen some pics of cars done that way with no well modifications."

I forgot to add to my post that the car is mini tubbed. But I do know the look your after, the 70's look with the Crager SS and L60-15 Tiger Paw tires. Used to be throw a set of Sky Jackers under the car air them up to 100psi and deal with the rubbing. I miss those days. If you go to here there are pages of combos that might help you out. Honestly FABO has been a huge source of where I've researched.
Post your wheel and tire combos.

Thanks for the compliment on the car.