I will have to check out the CRC shorter diff hub. That is ultimately on the wish list as it would allow all manufacturers back in the game if the motor plate was move over. Yea, as I recall I needed to move the LRP/Reedy's over 3.6mm (not 3.5mm), Novaks maybe slightly more or less. Then the only sampling I used was from a 5.5. 17.5 & 13.5's may have just a little more wire in the right place requiring a slightly different balance number.

As far as marketability.... well lets just say I haven't retired off of my previous work either. The motor shift makes sense. If others purchase it, then that's all the sense it needs to make. The one proto rear that I do have allows the b/l motor to fall right in the bottom without disassembly. Not that is going to be a big deal, once the motor is installed, it's likely going to be there for the life of the car.