Which intake manifold

I saw a stock slant 225 Valiant with a 4412 on a stock modified 2 bbl intake (adapters available to run the 4412 on that manifold) with a shot of 150 nitrous that ran mid 13's. Nitrous is by far the cheapest hp. I've bought complete used kits for $250. Thare is a member here that successfully runs a 225 shot on a stock 170, no internal mods. Save your money, run what you've got, then change it out if you're not happy.