initial D is REAL!

Hey guys, I sent my turbo in toa shop to get a rebuild. The guy there offered to put a t60 intake side on it for me. He knows turbos well, but not much on the rx7's.
1)My firend told me they might get the exhaust fins clipped. Should I ask the turbo guy do this? Is this something they normally do? He was going to do the to4e intake side, but it he could not get it to fit, so he suggested t60.

2)I have a s5 t2 street ported engine, 550cc primary, 1600 2ndary, fmic, rb turbo back exhaust, and walbro fuel pump. My buddy suggested an aftermarket fuel pressure regulator. What would you guys suggest if I get thise t60 upgrade?

3)Does anyone have a s5 turbo exhaust housing to sell in the area? I bought a s5 turbo off a guy, but it ended up having so much shaft play where the wastegate door was, it doesnt seal in closed position

Any help is much appreciated, thanks
3)I have a s5 t2 street ported engine, 550cc primary, 1600 2ndary, fmic, rb turbo back exhaust, and walbro fuel pump. My buddy suggested an aftermarket fuel pressure regulator. What would you guys suggest if I get thise t60 upgrade?