[Toeclicker]

Ok, I just got a brand new aluminum radiator cause my stock on cracked...it took a week to get it and put it in and ever since my car has been shaking badly. When i start it up it shakes like crazy but once it warms up its not as bad. When im driving it shakes but only from 1000rpm to about 18000 rpm. I thought it might have been the clutch but there is no chatter or anything on the pedal. so i kind of dismissed that notion. i am going to take off the flywheel cover and see what its like in there but before i got started i wanted to post and see if anyone could help...anything would be greatly appreciated