I have this kit and was thrilled with how much engine was there. Truth is [and said above], the engine is largely covered and what is there is well represented. if even 200 builders used the engine for other purposes that wouldn't represent a reason to develop the engine in totality. But were it complete how many would use it in other builds? All supposition of course. Aoshima is going to release a full engine detail Pagani Huayra this fall. The intervening years will show how many of those engines get used for other purposes. THAT engine [AMG Built BMW] is not only very powerful but has turbos and the whole nine. Time will have to pass in order to see what Hot Rodding is done with that engine. But from the test shot many of us saw it is state of the art. So lack of a TOTAL engine didn't stop me from buying this kit. It was the name on the box that sold me. I knew I was getting a serious kit that was accurate and would build straight and true. This will allow my finishing skills to produce what should be a stellar build. I have seen quite a few here and almost without exception they have been beauties.