I have been hearing a rattle/vibe mosty noticeable while under load and in 5th gear. It is also noticable in lower gears as well. As soon as I let of the gas it stops. The sound is coming from the trans tunnel area and is very similar the noise you would get while severly lugging the engine in high gear. Is this a clutch issue, or bad trans bearings? My clutch is 1t 96k and most likely original as well. It chatters pretty bad sometimes too especially in stop and go traffic. I will be taking to the shop tomorrow to have the u-joints etc checked, but wanted to get a feel for what might be happening