.... I take it you replace the entire rear end and not just change out the torque and put in a pumpkin.
So, what did you use to bolt the rear end down. U-Bolt? If so what did you use under the springs for the u-bolts to go through? If you made a plate you may want to weld you existing shock/strap mount to the plate..... welding it to the bottom or by simply welding a bolt, the correct size, to the end/edge of the plate.
Or, fab a bracket. I will say it is important, no matter what you do, to get that little "angle" like on the original. This will keep the shock from being in a bind as it will not line up nice and easy if you don't.
Another thing to think about is if you use say a 3" lowering block it will mean you will most likely have to get a set of U-bolts a little longer than normal. I found that 2" was enough on my 52 panel and used the regular store U-bolts.
Whew, didn't mean to write a book here but it depends a lot on your "specific" application.
EDIT: if you use lowering blocks you will have to use longer shocks than the original.
Last edited by Achipmunk; 05/29/2010 4:14 AM.