I love them too, so I have made a list of road legal aero, tank and fire truck engined cars that I know:.
Bentley aero-engined by Bob Petersen
Bentley Merlin Special
Blastolene B-702
Blastolene Big Bertha
Blastolene Indy Special
Blastolene Special
Chevrolet Bel-Air by Castlemaine Rod Shop
Cramer Comet Allison engined
Delage-Hispano-Suiza
Gary Wales La Bestiali
Gary Wales Van Berck
Jameson Merlin
Jameson MKII
John Dodd The Beast
John Dodd The Beast II Both the same car. And it was originally the Jameson Mk I, but it was only a rolling chassis when John Dodd bought it.
John Ould Hispano aero-engined
Opel GT aero-engined
Pur Sang 12 liters
Rodzilla
Rolls-Royce 1927 aero-engined
Rover SD1 aero-engined
Royce-Hispano
Spitfire Special
Swendean Spitfire
What about the three Chitty Bang Bangs and the Higham Special?
And there was too the White Triplex Special "Spirit of Elkdom" but, as a record car, I doubt it would be street legal. But still a rather amazing piece of machinery (as dangerous as it could be...).
Oh, and there's too the Monaco-Trossi, a FWD radial-engined racing car!