If you are thinking of a conversion and need a gunsmith to ream a barrel for you, I would suggest you contact Steve at marsguns.com. He reamed my Para conversion and did a great job. He also is my go to guy with questions about 1911 set-up in general, and has great input on 10mm auto 1911's.
He suggests a Cominolli Frame Saver guide rod which uses two shok buffers, buffering both the slide tunnel and the frame. This allows you to run a more standard recoil spring rate. He suggests this in concert with the ubiquitous EGW flat bottom firing pin stop.
p.s. Full disclosure, when he does your gun he uses my reamer and pays me a small rental credit on my account there
He suggests a Cominolli Frame Saver guide rod which uses two shok buffers, buffering both the slide tunnel and the frame. This allows you to run a more standard recoil spring rate. He suggests this in concert with the ubiquitous EGW flat bottom firing pin stop.
p.s. Full disclosure, when he does your gun he uses my reamer and pays me a small rental credit on my account there