Ive dealt with them twice, once for rebuilding a slant six short block years ago (they incorrectly milled the block for slightly increased compression, had too much actually) and was supposed to have a 360 short block sourced from them a few years ago but they couldn't find a core. Knowing what I know now I'd never consider using them. I'm of the opinion now that they are just another dime a dozen rebuilder, lots of commuter car engines as their bread and butter, nothing special etc, there are better options from members here.