I have a th400 with a PTC 3800 stall. i am going back to my 200r4. I have a Pats 3500 stall l/u i was using. Should i go back to the Pat's or have the PTC changed to work with the 200? Car has a GT70 p trim. 83's, heads etc. Won't be racing much but don't go on vacation with it either.