I built my own and I gave my self a budget of $7000 to build my 418 stroker. $13,000 later and I have a killer small block that brings a smile to my face just by starting it up. It dynoed at 490 up and 516 tq. It definitely out does the Blueprint but costs almost twice as much. If I had to do it again I probably would try the Blueprint, hard to beat the price and with a warranty it's pretty tempting. Still I am happy with mine.
