Hi Guys 

The coils mount to the head bolts via the adapters, they don't care what cylinders you have.
As long as they are not S&S heads !! .
Those suckers are going to run hot. Even with the heatsinks .

I was meant to say S&S barbells & heads.........so i am guessing no?

Thanks Loopie, i am in Old but thanks for the offer. I have been looking for a photo or pic of them bolted onto S&S barrells & heads to see what they look like before i inject the cash. I don't want to spend the money than not like the look 

I'm surprised they would fit the S&S heads ?
They have a different configuration around the spark plug, and use different length heads bolts to HD heads.

It is the shaping of the fins that worries me