Why not try a simple tire balancing. Will cost you $20 and just tell who ever does it to look for a bent wheel.

 

Well when I bought my mustang it had a bad vibration too. I found out that it was my fan clutch. I thought it was my tranny but when it came apart and busted my water pump, thats when I found out that was the problem.

 

Does it back fire at all? Checked the tranny mount?

 

i will check the fan tom

 

I am still trying to understand if it vibrates when you rev in nuetral, if that answer is no, you are not looking for something with the engine.
Knowing specifically it vibrates; in neutral, in all gears, only at some highway speed in grear, at highway speed in neutral, needs to be known to pin it down.

 

its in all gears as soon as he hits 2500 and up it vibrates

 

What if you are in neutral?

 

driveshaft??

 

what happens if you put it in netrual after you reach the 2500+rpms. This will tell you if if does it under load or not.

 

i did that and no vibration so its in the engine compartment