180sx Clutch/Gearbox problem

[2wayTouge]

gettting a very definite rattle vibration sound going from 2 thousand revs to three roughly. i have an after market clutch. Could this be a Release bearing?

Thanks

[2wayTouge]

Coming from straight under the gear stick

[thegosson]

check the carrier bearing that holds the prop shaft in line. might just be something like that ???