Well I know this is a shot in the dark but I went to our local speedshop to order a rear 1 inch spacer to raise the rear of my car. I'm running beltechs and shes a tad to low. Kid said he needs the inner diameter of the top of the spring. I figured all gbodies were the same and his book should show a listing w/out inner diameter specs. Not having the chance anytime soon to get the car up enough to measure, anyone here know off hand? Thanks.