Check out independent4x.com. This is about the only vendor for Isuzu's. Basically all you need are some coils (OME 912's or 919's) and 1" coil spacers to lift the rear. The front is free; just turn the torsion bar adjuster (1 turn = 1/4 inch). You may or may not need to relocate your upper ball joints to the under side of the control arms. This will help get the alignment closer to spec.

/1996 Trooper SE\
OME 912's w/2.5" spacers, Superwinch hubs, 265/75R16 Yokohama Geolanders (street), 34x10.50x15 Super Swamper LTB's, Indy4x HD Tie Rods, Indy4x Rock Sliders