[Captkaos]

If you want something simple (relative) and you know a good welder and you want to retain your factory parts, just Z the frame in the front (cut the front of the frame off at the firewall and move it up, weld reinforcemnt plate to both sides boxing in it and cut the front frame horns off and move them down wed plate to it for reinforcement). Then all you have to do for the rear is use a "super" (as they are called) C notch .

This is the same concept as a body droppless, but in old terms.