I’d be looking for a ch4b. It wouldn’t be night and day....... but it would be something, and basically looks stock.
I can attest to this.I have a ch4b on my well ported iron headed 496 with an older Hughes Engines solid lifter cam(smallest solid they made at the time).I did send the intake to Hughes for their "deep port match".All this was done 20 years ago it seems.
That intake has no problem turning 6k rpm and pulling to it in my 496.
