Any issue with them?
Like to do a 500ish inch stroker for the wagon, and was considering these. Not looking for all out HP, but i'd still like to go 12.0's, if she goes 11's i'd be elated.
My concern is how are they out of the box? need i change anything/cleanup, other than to match my springs to the cam? How is spark plug clearance? Would these require port matching the intake, or would that be only a small gain?

Thanks.