I have a 1992 Legacy N/A FWD was 4AT but I make it 5MT, I want the wrx EJ20 swap but I don't know is my tanny can handle the power (7K-TM752RY4AA, i don't know where my tranny guy get this tranny because I can't find this code in subaru tranny chart), my optios are. a) kept my tranny and see if can ...