Exactly! It will most likely be the left motor mount as it sees the most of the abuse. If you see the shifter pull forward (or feel it if you have your hand on it while watching the road), you can do a more in depth check of that engine mount by doing the following. You can also do this before the test drive if you want to - but it was the shifter pulling forward when I was driving "spiritedly" that clued me into there being a problem:

Park the car in an clear area in case it jumps forward while doing this.

Car in park, e-brake set, hood up, engine running.

Press and hold the brake and shift to drive.

While peering under the hood (or have someone watching at the SIDE of the car - not in front), gently start to give it some gas. Be sure to keep the brake pressed.

As you give it more gas (but not enough to spin the tires), you will eventually see the left side of the engine "jump" when it torques. It will hold in that "up" position as long as you have it under torque.

If it "jumps", that left mount is shot.

Mine looked like it jumped about 4 inches - scared the heck out of me when it did it. I thought the engine was going to twist out of the car, but it will be fine. Just do it slowly.

Also, if it jumps, that means when you are getting on it, the engine is probably smacking the underside of the hood - not good.

Keep us posted!

RL