[mickmate]

Hi Dom, according to Paved Track Technology the RC should be 2-3". I have some good detail and dimensions on the rear if you would like to trade secrets. My approach is very similar to yours although not quite as far along. I am fabricating the rear upright to my required geometry. Problem is same as you, what do you want/need for required geometry. There's alot of reverse engineering going on here with something that may not have worked that well to begin with. Still we'll have the look and feel of a 60's race car when we're done right. I'll be back in touch.
Cheers