93 f350

[SSD]

ok recently i got a CLEAN 93 idi diesel 5spd 4x4 dually. My welding bed is going on it and i want to put a 4 inch lift and run 35s on it just wondering what lift was going to work the best ie the toughest here are the choices i have found so far, are there any I'm overlooking any input would be great
http://www.rockymountainsusp.com/fd4_f350StAxle.htm

 

[wanabebig]

Id do a reverse shackle kit up front. It'd help ride a lot