Yeah, The edge type models are basically a 4x4 divided by 2. It has the 4x4 frame, torsion bars, control arms, ball joints, etc. but no transfer case, front axles, etc. It would be a snap to add 4wd to an edge if you got like a rolled/wrecked 4x4 for parts.
If you really want torsion bars I'd recommend starting with another truck, or changing the whole frame would be simpler then trying to graft a front section on...
I like torsion bars, but whatever...
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