That one is WAAAAAYYYY overpriced, with a bunch of totally inappropriate accessories for anything but a trailer queen show truck. A good-quality stock rebuild on a 261 will cost somewhere in the neighborhood of $1,000.00/1,500.00 in parts, plus machine work. If you can do some of the assembly and installation yourself, that $7,400.00 price tag will build you one primary engine and a couple of spares, not that you'd ever need another one!
Jerry
