about how much hp can the stock SR20DE internals (pistons, connecting rods, crankshaft, etc...) hold up to, especially when boosting? IIRC, i think i heard somewhere around 400hp? also, when going about 220-250 whp, i know your supposed to get a Cobra MAF, 370cc injectors, and a bigger fuel pump. i think im missing some other things, can someone clear it up for me? thanks.