A 94 has the better blower. What I would suggest to do is to put a 5% on the blower and a 5% on the jackshaft. If you have a very open exhaust it may require a 10% on the blower and 5% jackshaft but the Eaton starts losing efficiency at this higher rpm. Were talking major heat production with out at least a double ic and fan. Lots of heat = at the best of situations timing being pulled and producing less power or at worst enough detonation to produce a blown hg.
Lots of threads on the diff between psi and cfm. Our psi just measures back pressure. Cfm is what builds power this is why when everything else is stock and you really open up the exhaust the power produced goes up but psi goes down. More air under lower pressure is still more air and it is probably a little cooler to.