Wobble/vibrating noise after clutch install on 06 mustang gt

I just replaced my clutch on my 06 mustang gt and after about 50 miles of grandma driving I got this noise. Its only at the bottom of first and second gear and the noise seems to be coming from directly underneath my E brake. Im 95% sure it is not the flywheel (which is brand new as well). Kind of wondering if it is vibration transfer from the differential but it did not do it at all before the clutch swap? Any advice would be greatly appreciated! Thank you

PS. It is a SPEC clutch and matching flywheel.

actually, I feel like a dummy now... was a loose bolt... put it back on the lift and found it... was just vibration noises... oops