When I was a late teen I used to hang out at the shop of Al Alden, a local guy who built race winning Porsche engines for the East Coast gentlemen-racer crowd. His engines were so good at beating Porsche factory-sponsored cars that Porsche eventually set him up with a dealership (St. Albans, Vermont).
He had a shop way out in the backwoods of Upton, MA. The shop had benches lining three walls and one of those benches had a Porsche 4-cam engine, just like that one, sitting on a pallet and holding up one end of the bench. It apparently had been raced quite a bit and there was a lot of wear on the drive shaft gears of the cam driveshafts (which also drive the two distributors) so it really didn't run very well below about 4 Grand and was hideously expensive to get rebuilt, so the prior owner replaced it with a pushrod engine (and kept racing) and abandoned the 4-cammer, as a lot of people did back then when it came time for a rebuild.
They certainly look like works of automotive art and yes, Todd - It would look spectacular in your living room. Right below the Speedster body hanging on one wall that frames your flat-screen TV. Just like at Unobtanium.....