what is good to use in a 999 trans with a stock 5 clutch drum teflon,stainless,chrome or stock seal? the car is driven on the street but spends alot of time at the track as well.i pulled my spare trany out yesterday and noticed when i pulled the pump the one teflon seal was torn and looked like it tried to roll over.the clutchs in the high drum looked great as well as the rear clutches. I was happy for that as it has at least 150 runs on it at the the track as well as 3000 street miles.thanks Bradley