New rims

[Southpa]

I guess the price was right ...FREE! I tossed the rotten center caps but they had a capital "A" in Italics in the centers, any idea who made these rims? They also came with some unusual lug bolts with sort of off-center sleeves to fit my lugs (see pics). They are solid aluminum / magnesium alloy I guess. Very beefy but lightweight.
They came off a 78 GM truck but had been sitting for a while. Since I swapped front ends (1970 - 6 bolt to 1971 5 bolt) they should fit no problemo.

Now I need a rear end off a 71 or 72 w/ 3.08 gears and coil spring. Otherwise need suitable axles but I heard the there were 2 different size axles on the 1970 trucks so I don't really know what I should be looking for...?

Back to the rims, there is a bit of pitting, not really serious but what do you figure is the best aproach? sand them down and polish then clearcoat? I've been doing a bit of googling but I mostly come across places that just want to sell me stuff.