Hoopie where you at? I'm about to catch up to you! BTW I'm using a Type 3 now instead of the Super Beetle, and it bolts to the same exact VW chassis that your Karmann Ghia does. So it would be very interesting to see how your project compares to mine. The Miata I'm using is much narrower than your Prius, however.
(and sorry I haven't created my own thread on this forum, I already have one over on Grassroots Motorsports:
https://grassrootsmotorsports.com/fo.../145906/page1/ )