I'm about to order 17x8.5 walker evans bead locks and I'm not sure what backspace I need- 4.5, 4.75, or 5. There are a ton of backspacing options but these look like the 3 popular choices. The wheels could stick out a little more but I don't want them past the fenders. I'm also ordering 37" tires and perch collars.
Get the 5" backspacing. It'll require the least amount of cutting with 37's