By the way, I've started on the engine mount and have
confirmed that only the ring gear and the starter's snout
has to be recessed into the firewall. So the "mag box" is
going to be about 1.5" deep, and 12" in diameter. This means
that anyone considering the removal of a VW from a Q2, and
the installation of a Corvair engine, won't have to remove and
shorten the header tank like on an 0-200.

http://www.angelfire.com/ca6/kodachrome/images/LaVerne/DCP00526.JPG

Pat