I have 4" blocks on my '96 pickup with no twisting problems. I also had 1 leaf removed but now put it back in for height & had no twisting issues then either. That front is WAY low. Are you sure it doesnt have spindles AND 4cyl springs? Just for a comparison, heres a pic of mine with 4" blocks & one leaf pulled in the rear & 2" spindles plus 1.5" Xtreme coils in the front...
