Head flow for autocross torque

[SRD Art]

My current motor runs out of breath at 4500. I want to run a bit steeper gear so I'm thinking around 5000-5500 peak would be good. 210 cc sounds big for a lower rpm range torque motor, no? My drag motor seems to pull past 7000 with world products 200 cc heads but with it's cam and all makes little power below 3500.

I like the 195 AFRs but them and and Brodix are not in the budget I want to spend- those ATS spindles sound awfully good when compared to spending more $ for a few extra hp.