Re: Tunnel Ram ?
A pair of 390 Holleys might work ok on a traditional tunnel ram. That intake you linked to looks like hot garbage and I suspect it works just as good as it looks.
69 Malibu Stock 307, Reverse Manual TH350, 4,500 Stall Edge Converter, 4.56 Spool 35 Spline 12 Bolt
76 C20 VortecPro 496 628HP 655 lb/ft TH400 Edge Converter, 4.10 14 bolt