Things I would do!
1. Look for cracks in the front frame, near where the engine mounts.
2. Look for cracks on the tunnel.
3. Get the compression tested on the engine.
4. Inspect the clutches, #### I would even remove the primary and take the weights out to look at the bushings and check for slop.
5. Inspect the track. Look for wear on the inside and outside. Look for missing clips, and tears.
6. Take it for a rip and check the plugs.
just my two cents!