Has anybody recently bought a slant six crate engine?

Man, for all that machine work I'd put a magnum in it. But if that's not an option yes an engine shop will rebuild it. I would advise learning how to check your own engine internals and heads to determine if they need rebuilt heads are fairly easy to do a go/no go check on valve guides, it requires a valve spring compressor and hand lapping valves works also on an overhaul but if you want completely fresh rebuilt, and you wanna pay there's always someone out there. Keep in mind machine shops are drying up all over the country and whoever is left will be backed up and able to charge whatever they want . Shop around and be wiliing to travel to find the best machine shop. Engine shops are probably still alive in big city areas, but there is always a hidden guy in farm country also and that is word of mouth...speaking of which we should start a thread of "still operating engine building shops" in each state :)