So far we have ProMaxx 185 Shockers, Trick Flow 190 and Bloomers. The Shockers vs the TF's should be an interesting comparison. I would love to find a pair of PBR heads to try against the Bloomers. I think many on this forum would enjoy that. So if you know of a pair, let's see what we can work out. Otherwise, there may be another set of heads in the mix.
I too would love to see all kinds of different things tested, but time and money will be a (the) limiting factor. NC Engine Builder is putting together a 408 short block. I'm sure he will share details and probably pictures as he is able.
For manifolds we have a ported Victor 340 and a ported Super Victor. Time will probably only allow one of the two to be used.
Cam is TBD. Talking with Jim at Racer Brown.