Built K20's can make serious power. K20 swap, k-pro and a header will net you 220whp. If its the k20a (R), than you can get roughly 230whp. My buddy down in south jersey has a fully built k24/k20a in his hatch. All IB spec internals, custom intake manifold, R-crew header and so forth... He dyno'd 302whp and runs 11's... Only thing I dislike about the K-series, is that their short blocks arent really super strong (in stock form).