The oil pump must be installed per the instruction for everything else to go together as planned, designed, and described in the WSM. BUT, regardless of how it is installed there is ALMOST always the ability to orient the distributor and wires in such a way as to have the car run correctly. I suspect there are a few of the (11?) possible pump positions that would make it difficult, if not impossible, to orient the dizzy such that the rotor could point to #1 wire while firing the coil at the proper time.
As John implies, I also do not understand any purpose in deliberately mis-orienting the oil pump as described by 65Beam except to put the #1 wire (and other wires, of course) in a different location than stock.
After all this discussion, John, if your sump is not already off I don't think it worth the effort to re-orient the oil pump. I'm not sure what else is off in your dist, but your #1 wire should be 180 deg from the factory location.
I think, but am not sure, that it is possible to assemble the distributor, mechanical advance mechanism, such that the rotor will point to normal #1 wire position with the oil pump 180 off. Or maybe you have a non-stock distributor.
Tom