Hello Bruski, nice shop, nice project. The perfectionist part of me would do a frame up as you are, but my available time tends to make me do superficial work, then do it again with the time I didn\'t have in the first place.
Questions and comment: are Vortex pistons needed to go with the heads to duplicate the Vortex effect? Will the Edlelbrock manifold work with the heads to retain the Vortex effect? I helped a friend do a similar swap and he likes the results.
My understanding of double bump heads is that they breathe better than Vortex at high RPMs only. I read a test of a Vortex and race engine put in identical race cars. On the track the Vortex was right on the bumper of the race engine car, and had better fuel mileage to boot.
I hope to be making posts soon, myself.
I am in Golden Valley. Do you care to disclose your city?
Regards. - Ted