Cylinder head dyno shoot out

Thinking of building a 408 or 416 dyno mule, and testing some currently available SBM aftermarket heads. I have in stock a shelf of speedmaster bare castings I will personally port, a few sets of prepped W2s, and would be willing to include any other available heads if someone wanted to loan a set. Especially a set of the BLOOMER heads. Just a fun wintertime science project