That World Sport appears to have, as do a lot of low-ish-end Schwinns of the time, a plate welded between the chain stays to mount the kickstand. It's the one circumstance in which I suspend my general opposition to them.

And yes, my wife bought a 4130 CrMo World Sport, I wanna say '84-'85-ish, at a thrift store price, since they thought it was just another steamroller Schwinn. It's not, in the least.