Reply to "Looking for Mangusta wheels...."

FWIW, the DeTomaso factory in Italy still owns the molds used by Campagnolo to make all the wheels they ever sold. A dozen years back, one owner contacted the factory and had several sets of Vallelunga wheels remade- at enormous cost (originally made in the early '60s). But that was the ONLY way to get a set for that DeTomaso. If you're adamant about getting a set of OEM Mangusta wheels, call Steve Wilkinson who is the factory contact nowadays for ALL DeTomaso parts impoted to the U.S. It will NOT be cheaper than E-Bay, but they will be brand new.
Second point: cast magnesium age-hardens, so old wheels get harder and more brittle, even if never used and sitting quietly on a shelf. Home heat-treating can remove these stresses but it does destroy original paint.