He said the car has a Alston hack-half,so I'd assume that they didn't reuse the stock leafs for that.I think what he means is that his shocks are non-adjustable.Does it matter how far off the axle it is?I mean aren't basically all coil-over mounts the same distance off the housing.Plus the leverage against the spring will be dependant on the length of the control arms/ladder bars/four links.Just my opinion.And most all ladder bars are 33" center of the housing-center of front rod-end,so that removes another variable.If I were you,jjam,I would call Chris Alston and talk to them,since it's their suspension.They built it so they know all the angles and such...you can't beat a man at his own game!!Good luck!!