I have used and put in few trans that I know redline and cam would be interested in,they were full 6 speed auto they had no spring anywhere to hold forks,billet sliders were manufactured for the shaft and time area was taken off the pads to ease shifting but there was no back cut on gears so it doesn't chew forks,I started to fuck with different ideas but as you guys know time is at a premium and my Bridgeport mill,lathe,two tig machines went down in flood.So pretty much I got fucked sandy and now have no time or equipment