The big stumbling block to me is no dist. So no basic low budget build, big money right from the start. After accumulating parts all these years none work on the engine, you start from scratch. Lap tops, FI, fuel rails and injectors, o2 sencers, for us older guys a little intimidating. Never have had to pull heads just to change lifters-cam. Bad part, I got three looking at me right now while scratching my a$$.