agreed, this tranny is good but not good enough to handle a full blown race motor. there are some rumors out there that say this tranny can handle up to or more than 400hp **just a rumor though**
he means our trannys have an oil cooler to keep the oil at a good temp. and the faster we go the hotter its going to get......so we would need to do a little upgrade to keep the oil cooler if we want to go faster.
bigger oil lines that run into the tranny, like phil said "bigger oil cooler", and i would add a faster oil pump that can handle the power you want to put out.
oh and just to let you know, this is only to maintain your tranny. this will not make you faster or more pwerfull, lol. its only so that your tranny can perform at its maximum potential. this does not mean you can get 500+HP from it....lol.