I had a friend that used to run Bonniville and He told Me that 1 1/2 drgrees is all thats needed to run well over 100.. It seems to depend on just what book you read... As far as hot rod car books go, they mostly print what people tell them what works good for them. I will have to read up on it again in a real good suspension book... Now your caster should be easy to adjust, with the length of your seperate radius rods, top and bottom.. I hear that a lot of street people run about 5 degrees, What do you think, George? :sofnny: