From what you say grinding im asuming its a 5 spd T-5, well for the grinding its most likely 2nd and 3rd gear synconizers, those parts are worn out and are not working properly causing your grinding issues. Well what i did was contact D&D performance, forget there website but I got a T-5 rebuild kit. comes with everything needed for the rebuild. oh i almost forgot to mention, try and get a 94-95 shift forkes for your tranny, they are updated ones and have a better quality, a little tougher than fox body T-5 shift forks.