I'm a little concerned.....

Basically, once the revs hit 7800-ish, the engine starts to shake. it's a very rapid shake, about as fast as the valves would be moving...for lack of a better description. It's not very severe, and if someone sat in the car they wouldn't notice it unless i pointed it out. It's very slight. I can feel it slightly through the steering wheel and it can be heard as well. i mostly feel it in 1st and 2nd gears.

I DO NOT feel any power loss when it occurs, and if i hold the rpms right at 8000 once i feel the shake, it goes away.

i just bought the car a couple months ago and i began to notice it after a week of driving and getting to now the car.

my thoughts are that it can't be too detrimental since she's running beautiful otherwise. i just changed the fuel filter, spark plugs, oils, fluids, etc. and it's still there.
could it just be the engine trasmitting itself through the cabin due to the raw nature of the ITR/engine??


any thoughts?? BTW, it's a 2000.

thanks!!