Afterthought.

I can't think of any problems with this, but somebody else might be horrified.

When I install a new timing chain, I plan to connect the new chain with the old and crank it through by hand until the new one comes up the other side.
I will have moved the crank through x # of rotations to do this and I assume that it won't care, as long as the cams are timed correctly by the dowels and the crank's on TDC with the intake cam sprocket fully retarded by turning it, independent of the cam and crank, clockwise to the stop.

The chain tool seems hard to come by as a loaner, so does anyone know where I can get a master link, ala bicycle or motorcycle, for the MB duplex chain?