just remember that, a fully modified B-series (I'm talking about "the lot") might be as quick as a stock K-series (except bolt ons and ECU) but u have to wonder about the reliability of a worked B-series compared to the stock K-series.. coming from exp. I spent about the same amount of oney on a B20 build. pushing 150kws atw, but if i could do it all over again i would hve spent it on a K-series. newer technology less worked and producing the same amount or less but running quicker times... Plus you get decent fuel economy lol.

just my 2 cents