I've done it before with a crown vic (back before these new updates when the wheels weren't "no texture" wheels) where basicly I put the crown vic body on a moonhawk frame and yes I had to really look for the picture (i don't have a thousand yet or a hundered pictures) And the crown vic is really FAST (thrusters yo!)
This is pretty awesome I dream and hope It will be possible in the parts selector the future, if the dev-team get involved But good find