I'll be no help for the numbers, but my dream would be the
Volkswagen e-Beetle rollerskate with a reproduction VolkhartSagitta V2 body. Except with a modern underbody.
This photochop is rough, but it gets the idea
The beetle floorpan is narrow enough at the front to get a proper front wheelwell.
edit: I should go in and clean that up. It doesn't have to look that bad.