And he's using a V8 car engine (looks probably like a small-block Chevy engine) rather than an aero engine? Who's done the analysis on that?
V8 is widely used, mostly seen in P-51 replicas and the Spitfire mentioned by
Genghis.
The South American River sells facsimile Pilot's Notes for it, btw
Available for free on the net, as are most Spit marks, will dig out the link.
https://www.mediafire.com/folder/l3k...t's_Notes