X heads and compatability

Those "Domed" Pistons will hit the head unless it is an open chambered head like your stock X,J, etc.... or open chambered W2 heads. Excellent head if you can find a set of open chambered W2's.
A well ported set (W2's) & that cam ought to make some serious power. What is the duration @ .050?

And ... I might be finally selling my open chambered long stem race W2s /Victor man/Hedman headers since I've given of hope of getting a W2 blower manifold from Australia. Hopefully, I'll get a chance to post them in the next couple of weeks.