I know your very worried about this motor as you have had a bad beat down on your last build. Installing a head and finishing the long block is not complicated at all. I assume you are using head studs. That makes torquing the head eaiser as it no longer uses degree specs.. There is alot of little things that you have to double check when installing the rocker assembly. They like to spit out locking pins. aligining the timming chain is easier than you think. As long they have done a few k series assemblies , it should be no problem. I wish you the best on your build. It sounds like a killer setup. I just wish you wouldnt put it such a pig of a car.LOL I look forward to seeing this thing at the track.