I would do some major research before tackling that job. Here's a couple places to start.

http://www.artmorrison.com/rearclips...inks/index.cfm

Scroll down about 2/3 pg. on SW 's site.
http://www.swracecars.com/new_products.asp

Some reading on suspensions
http://home.earthlink.net/~whshope/