1) Yes get new PP/C/TB. Cryo...dont think its worth it for a PP. Never been in a tranny but would like to know how hard it is to get the diff. out so i can get mine welded in the future.
2)I know of a few off hand but no one locally.
3) Put that shit on and go 12s on the 14b DAMNIT! Doesnt really matter. Its all gotta come off one way or another when you put the 20G on anyway. Not that much work really. Were talking maybe 2 hours to swap it all in.