Thanks Sonic,
Good question on the drive motor mount. It is a big, heavy motor, and YES is does need and does have a support.
The original car setup, with the gasoline engine has three support points for the combined transmission and engine.
The transmission is supported on the driver's side, and at the back, near the firewall. The engine has one support on the passenger side , and the rest of the engine is held up by being connected to the transmission.
My electric motor BARELY fit in the car. I needed a way to hold up the back end, but it had to be simple and slim. Also, I didn't have a welder, so I was limited in what custom parts I could build.
The back end of the motor has four nice large threaded holes in it, just waiting for a bolt to go right in.
I ended up using a turnbuckle from the hardware store. I ran a bolt through the eye of the turnbuckle into the end of the motor.
I slightly bent the other end of the turn buckle, and slid the bolt that held the original motor mount through it. That bolt is covered with a piece of scrap rubber hose to act as a mini-shock absorber and keep anything from sliding around.
This has seemed to work well as a motor end support so far. It didn't involve any welding, and was a part I could simply pick up from the store. It's also adjustable, so I was able to install it and THEN fine tune it.
Since I now have some new EV-building friends (with welders!) maybe I can design something a little nicer, which will go into two bolt holes in the motor.
I think this new motor mount is what I was test-driving when I got the speeding ticket! Before the turn-buckle, I had a piece of metal bolted in there from the motor to the frame, basically doing the same thing, but it was pretty flimsy. The motor was held up, but not well, and the motor really could twist in place too much.