Erson Camshafts

Thanks guys for all the great info. Looks like I'll be digesting it for a while. Maybe anyone out there can advise which grind they are running and the set-up (carb and exhaust) they have. Where do you find the power coming on from ___000rpm to ___000rpm.
I had advised Erson of my wanting something coming in at around 1200-1500 rpms and all in at around 4200-4500rpms. This will also have a Holley 390 four barrel (still need to get) and dual exhaust.
Thanks again for any and all info.
Cheers Paul