Would this work?

[rydinhigh]

A friend showed me this of a chevy board. These trucks have torsion bars and they are able to gain an extra 2" of lift in the front and another 2" by cranking the bars.

http://www.fullsizechevy.com/forum/showthread.php?threadid=65871

 

[Austin w]

I've never heard of anything like that being done before but I'm no expert.

I wouldn't go more than two inches on a TT with 4wd tho....