It was a full size replica that he built, that was (as I understand) very accurate. It was engined (right word?) with a modern V8 of some variety if I recall correctly.
He lives only a few miles from me, and I had been meaning to see about a visit for a long while, but never got to it.
Phil drove Indy Cars in the 1980s.
A little about it here.
http://www.theaerodrome.com/forum/re...-fuselage.html