Last summer I spoke with Seth Garrett of GFI and he said the GM transmissions were still in testing phase. However, they are coming.... and you KNOW that market is much bigger than ours. Garrett Fuss Inc is the company producing the A855 and the 5 speed muncie trans.
"It takes a Mopar to catch a Mopar” 1970 Challenger T/A 4 speed EV2