I have this weird vibration at low rpm and when i get into the higher gears. I thinkit's either the flywheel or driveshaft because i recently replaced the clutch and rear-end, and the trans is fine when it's in gear it happens when i step on the gas. Any suggestions on what it might be.

 

Anyone? I really need to figure out why this vibration is ocurring.

 

I had the same problem. It turned out it was a misfire. I changed plugs, and it went away.