While they do work well, far too many of the boxes get mounted under the tank and subjected to heat.
And that's the problem, because there's not too many places on a CB750 where you can mount one externally. If you do find a good one though, they do produce an nice fat spark, I had one with the green coils, and compared to a new points plate and OEM coils that I replaced with the Dyna 3, it was incredible, you could just about weld with it, ha ha! Not saying that it was better than the Dyna S and green coils I've got on my K2 now, but I reckon it definately threw a fatter brighter spark! Cheers, Terry.
