i have a 98 gsx with a 6bolt so instead of swaping bells, i just put the 90' trans in there and customized mounts off the block. the 1990 awd tranny lasted for about 6 launches. first 5 at 4500rpm then i launched at 6k and the thing went "kaplooie". on jacks the rear wheels spin but no front and it makes a grind sound sometimes. the car will drive under about 2% throttle. any more and it neutralizes. it doesn't pop out of gear though. any ideas on what i broke? i'll be tearing it down later this week.