hahhaha., funny u should say that , when i went to reco my 3SGTE i found that the rear main i bought from repco was to small aswell.., i argued wit them untill the cows came home.....however i found a place close to my work that sells the correct seal, the guys there is a asian and has been in the business for like 40 yrs...drop me a pm , if u want me to get u this seal..