I have had a Dynaspark opti in since last February. It has performed well and I have no complaints. They are a bit pricey, but I like the quality parts and construction of these hand built units. I can understand why some would rather just pay a smaller amount for a regular opti as it might work just the same for their use. But I don't care to do that.

 

Quick silver T/A I believe you are thinking of the newer style opti-spark. I still have the old style optispark in whick the end of the cam is completely covered. so if the dowel pin length was too long, I would first have issued with the timing cover bolting down to the block, If the dowel was too long it would grind a hole in my timing cover first it I was able to bolt it down. SO I am Thinking that is probably Highly Unlikely in my case. But I do appreciate the suggestion.