Can I use the FD gear out of any 92-93 Integra manual transmission in my 92 GS-R transmission? The FD ratio is the same. What is the part called that drives the FD gear, I forget. Is that compatible too? When I got my LSD switched into my new transmission I'm pretty sure the tranny shop did not shim the diff correctly because it has been making noise and it has a lot of freeplay. It's been like this for a year, I was stupid not to bring it back right away because it wasn't apparent right away because it was a new transmission and I wasn't sure. I'm guessing since it's been like this for a year the gear is probably damaged and needs to be replaced or it'll still have freeplay when shimmed correctly.