I have an 89 integra and I wondered if anyone out there knew if it was possible to swap 5th gear w/something from another honda trans. at 75mph the engine is running at about 4500rpm and I want to lower that if possible. 5th is easy to access(behind the black cover on the end of the trans) any ideas? I want to keep the other 4 gears as they are. hopefuuly someone else has tried this and has an answer.....

 

your gonna have to look into Accords trannys. The 86-89 teg trannys are based on the Accord design.

Your only other choice is a custom gear set from Jamie Houseman of Houseman Autosports.