(Photographer : Bill Bushell : CTPMS)
Now let's speculate for a moment ...
Apparently it was hoped that the Bonner conversion might have been of interest to the MOD. Essentially a 3.0 litre Ford V6 engine fitted with a turbocharger. Bill Bonner won the Kings Cup in 1973 at a speed of 142.7 mph (124 kts) in the above machine.
Had the MOD progressed with the Bonner conversion then RAF Training Flight Lines could have been graced with a really mean looking machine ... just add Sharks Teeth and possibly a bubble canopy