I am looking to step up from the S4 to a 60-1 when I drop the SP in. Someone here locally is trying to sell me a 60-1 that I am thinking about buying. Was thinking since I already have have to get another manifold, run it on this motor till I can fund the rest of the SP motor. Right now I can make full boost (8psi) somewhere around 3500-4000k. Will the stock ports flow enough air to still have a useable power band, or is it gonna lag too much?