Hey guys just started looking and found this thread. Think you should know. I have a Level 10 built tranny in my 89 turbo (td06 20G). When I was running just over 300 rwhp the tranny went . It only had the valve body and torque converter upgrades not the bullet proofing kit. So I had a tranny shop guy do it with the L10 bulletproofing kit (supposed to be able to hold 1,024 hp) . We just fixed the boost leaks and where getting ready to head over to the Tuning Factory tommorrow morning when the tranny started having issues. It would hit redline and bounce of the rev limiter with out changing gear. I have heard negative things about L10 so not sure what to do but the shop owner suggested a TH350 kit with adapter and converter. With all the mods and bolt ons it should be running 450 - 500 hp right now which the TH350 can easily hold. What all is needed to do a swap to the TH350 and where would one go in the Detroit area to get the parts or are they only available from a specific manufacturer or seller? Thanks