Being creative could add to what the links are showing. If someone just wants upgraded parts and ride for a driver truck, the 2nd link appears to be better thought out. In my humble opinion both could stand a little more thought in how the 2 were joined. Using the Camaro clip should make for an easy "blend" to the OEM truck frame due to it`s tube size (3"x3" I think). If your donor is nasty and scaley strip it 1st. Nothing worse than putting rusty old parts on a rusty old frame. I suggest you remove the coil springs and set up the new frame section to finished ride height and make a tube that replaces the shock to hold it there. "Frank" was on the money about the 3/4 forward deal. Take your time and imagine what it would`ve looked like if GM used those parts on that truck.
1 more thing to consider...you could narrow the sub-frame about 2" to create a better merge of the old n new. The trick is the steering center link. Once cut, you need to use a tube with holes for rosette welds to add to the strength of the shortened center link. It needs to be used over the weld in the center and that weld ground, then slide the tube over and weld it in as well. If you don`t have tig capability take it to someone who does. Motor mounts are easy, but be certain to take into account the offset built into he Camaro sub-frame. A 1" offset to the pass-side, or in easy terms engine center is 1/2"to the right. This was done to give the driver more room in the Camaro`s and such during those years as well as more stable weight distribution. The old stuff runs right down the middle. Just some info to consider. I hope it`s helpful. I don`t mean to be critical or negative, just bringing a "dish to pass" at this party. MEASURE, MEASURE, MEASURE. Then measure it one more time. Good luck with it.
