Rotating the motor to position the wires down sounds like a good idea. It looks like you may run into some interference with the TVP though. Aren't the wires flexible? If so I would go with bending them and using heat shrink as BlackedOutREVO and jhautz said. Keep us posted on this. I am installing the same motor in my conversion. I give you total credit for figuring out the 1521 would fit, nice work....

Looks Awesome!!