im trying to figure out a few things. first off do the upper and lower links have to have the same triangulation. my wb is 115, im planing on 42s on a cut down fullsize about 5000lbs with 4" lift. thanks for any help. flame suit on:flipoff2:

No, and if you have to ask you have a lot of research to do.

Here's a crash course:

http://www.4wheeloffroad.com/techarticles/suspension/131_0306_four_link_suspension_part_1/index.html

http://www.avalancheengineering.com/july2003.htm

http://www.jeepaholics.com/tech/quarterellip/

thanks im starting to understand all this a bit

im actually just gettin started on 4-linkin the front of my k30. i'll be runnig 38's to 42's with about 6 inches of lift. so far im useing 78' bronco coil buckets, and 8" f-150 skyjacker coils. and i got a set of lower coil bucket/link mounts from http://www.ballisticfabrication.com/. be prepared to do sum heavy fabing