[tfarhood]

I used the 15" 6 bolt pattern. I don't think the 15" is too big that it takes up thigh room. The BDR wheel is 13" (even though Reg told me it is 14"). I wanted to maximize the wheel size for leverage. My car is very easy to turn compared to the original wheel.
You do have to re-drill 6 new holes and tap them. It is not hard if you have a drill press available. You could do it with a hand drill, but not as easily. There is plenty of room in the steering hub for the new holes.