I just bought a set today for my F2, that contains AFAM steel sprockets 15/43 (stock?) and a 108 link DC QX-ring chain. The cheapest set I could find so I`m not expecting much of it, then again I`m not gonna wheelie, burnout or abuse it otherwise so I`d reckon it should do fine as I`m mostly driving good condition paved rural roads.

Got home, opened the package and realised it`s a rivet-chain... Gotta figure out a way to get the lock-link on there, thinking about trying to squish the ends with a gear-puller`s center screw...

 

I'm not familiar with DC chains, so, no help there, sorry.
Yes, 15/43 is stock.
You can "peen" the pins for the master link, by appropriately positioning a heavy piece of steel (I use a 60 lb cast iron dumbbell) and a small to medium size ball peen hammer - or you could buy a nice chain tool that can break links and do the peening for you.
Oh, and, good choice for sprocket brand, AFAM is all I run.

 

Propably would have bought the chain tool but couldn't find any. Got a few ideas up my sleeve, shouldn't be too hard...