What is the largest tires and wheels that will fit a Demon???

I am trying to find out what tires and wheels I can run on my 71 Demon without having to cut or alter the car.

I am running an 8 3/4 rear and aftermarket Wilwood front brakes. My bolt pattern is the large (5 on 4.5) bolt pattern.

Anyone running 17's on their cars? I may try to go to a 17" wheel with a low profile tire.

Thanks in advance!

Brian