Quote:

how did you drill out the spring perches im not quite sure what you did there? any pics ?



On the IC setup, the leaf spring bolt (which passes through all four/five leaves, just like a regular rear suspension setup) has some rubber surrounding the bolt, making the hole on the base of the leaf spring perch (which is welded to the axle tube) larger than on a non- IC spring perch. To properly center the spring perch (using your stock IC-setup rearend) on the leaf spring bolt after eliminating the IC setup, you need to make the spring perch hole smaller in diameter, since you removed the rubber around the bolt.

View the first picture HERE to see how a large but was used to 'fill' the hole in the upper IC-system shock plate and decrease its diameter.