the first day i got my car my tranny blew. i got a used rebuild in it right now, and when i got the tranny replaced i had to replace the clutch. the car now feels a little slower and the clutch doesnt grab nearly as well. im pretty sure the clutch that was in the car before was not stock cuz that sucker grab like nothing else. i also think there was some mods in the old tranny. anyways im wondering if i change the gears in my rear differential will that make the car feel quicker? and if so what kinda gears should i go with? also im pushin close to 400 hp, what is a good clutch that will grab good and give me a good luanch. any feed back will help. thanks