I've got a 92 k1500 as well and curious to find out if Shoenfelds long tubes can be used and routed without interference with the front drive shaft
I called them and the guy I talked said they will not fit a 4wd. Ive got a buddy using camaro full lengths on his 84 k2500. Im going to try and get over there this weekend and see if the drivers side will clear the driveshaft or not.
1992 rcsb k1500 lq4 4l80 swap done.If anyone has questions feel free email as I'm not on here very often. bobby_seitz@yahoo.com