I purchased one last year but I having got around to building it yet. Getting the other parts to put it together have been an issue. I expect to begin putting mine together at the beginning of the new year. You can read the build threads that 440Jim posted this year for a BM 440 aluminum block engine. He put a lot of detail in his build thread that discuss the block and what had to be done to it at the machine shop to get it ready to put together. I would expect the Hemi block to require a similar level of machining. If you haven't purchased one yet and you decide to do so, I can highly recommend Todd Marsh at Marsh racing.