The Super-Sapphire Bonner is a supercharged V-6 engine that gives 200 hp at 5,500 rpm. It has reduction gear and is liquid cooled.

"Bonner, upper view"

-It has a displacement of 3,000 cc. It was used between 1976 and 1982, but no effective applications are known.

From Appendix 10: Super-Sapphire V6 installed on a Canadian DH "Chipmunk". The resulting visual impact is favorable.

"Bonner engine on Chipmunk"