Like I said in a post above I think Speedmaster has made some improvements over the years. Another example is that the intake side of a Speedmaster out of the box flows more than an Edelbrock Head even with a suck azz valve job.
Yep. It looks like straighten out a few things and they will be good for a nice street cruiser. It was good to hear about the exhaust side being decent. I wonder how they would act with 340 manifolds instead of headers?