Thats what we bought engine wise for this years brkt racing, a mild 695hp 589ci mega block wedge -13 headed roller cammed motor complete, but only on 10:1CR shift it at 5700-ish max hp...trap@6200, got it to 10.3's@3800lb NA through full exhausts. To get it reliable and to hook with 700+ftlbs a built 727/converter/Dana/TTI's/caltracs-mono's 9-ways etc was bought..... the bill was over $30000 to buy it all and have it fitted by the speedshop.