Ok guys my car is shaking and at first my teacher told me axles but now hes almost positive thats not it. Were gonna put it on the dyno at the end of next week but i cant wait that long.

When i accelerate my car shakes. Its not a vibration but a shake, like door panels sometimes pop off, dash shakes crazy bad, windows rattle, steering wheel shakes left to right, i can feel it in my seats, pedals, and floor. It is extremely bad and i cant deal with it any longer.

When i shift gears i hear a clunk sometimes but only when i shift. Not while letting the clutch out or anything. Right when i put it in gear.

At school we put it on the lift and checked tie rod ends and wheel bearings.

Tires are all balanced and have recently been checked.

Engine mounts and TQ mounts are good and torn ones replaced.

This all started around the time when i swapped my transmission, clutch, resurfaced flywheel, suspension, and rear LCA's.

Went from a LS tranny to a 00 Civic SI trannny.

One thing i was a little curious about was the engine stiffeners, the LS has one but the GSR has 2. I have a B16a and a B16 tranny. Do i need two now?
Here is a pic of the stiffener i was talking about :

Please help me
Tim