Jim Husted actually sells a Dual motor setup, the Jimpulse 9. It has a single armature so there is no need to couple the motors together and even looks insanely sturdy.
http://www.evcomponents.com/ProductD...ode=Jimpulse+9
Through one of these in your Vette and you will be worrying about killing your transmission instead of not having enough show off power.