A few pics of the finished motor mounts. I slotted the lower mounts to allow the motor to be moved back and forth to tension the drive chain.
There is another part not in the picture that bolts to the front of the lower mounts and has two bolts that push the upper mounts back to tension the chain. More to come....

Update on the AMPhibian

Things have been progressing on the conversion. I've ended up spending more time fixing things on the Attex than working on the conversion. Bad axle bearings, bent axles, worn drive chains, and body cracks. The body cracks have been a real pain, ABS plastic isn't easy to repair in high stress areas. Unfortunately the body tub is pretty thin in the lower corners, where it should be the strongest. I've been using a combination of heat welding and ABS chips dissolved in acetone, with varying degrees of success. I will be making a skid plate out of heat formed HDPE plastic as a final reinforcement.
On the conversion side the motor mounts are just about done and I need to mount the contactor and controller.
I should have some pictures up soon.

John