the GM Synchromesh is really a great product... Smoothed out my shifting 200%. My brother has a B16 that has started to grind 2nd so he just put the GM stuff in his tranny and its been about 5 days now and his problem is getting lesser and lesser each day he says... Also, this might sound crazy as well but I have a buddy with a Prelude H22A in a Hatch and for some reason he can't shift into Reverse anymore... He called up the place he baught the motor from and they said try the GM stuff first and see if Reverse starts working again before they just replace the entire tranny so he's gonna go buy some GM stuff today and see if it eventually solves the problem.