Cool video, those guys are doing nice work for being on a dirt floor. I would think final clean up would be with some solvent before he sets up valve springs. Note how many times he checked to make sure valves were all the proper distance up from the surface of the head. I don't do imported stuff, but Nissan is probably an interference type head and that distance would be critical after so many passes surfacing the head.
I am always blown away how things are done around the world. That said does anyone know if the saddles are OSHA approved? Might be nice to have a pair of open toed sandals for the hot Havasu summer days in the garage. :looking: