According to what I could find on the internet, the 80th operated F-16C Block 30s up until late 2006, when they started trading them for Block 40 F-16Cs. Depending on what time frame you wish to model, you'll need to choose which one of the two blocks you want to build. For more info on the different production blocks, go
here.
I'm a big fan of the Hasegawa F-16 kits, easily the best 1/48 scale Vipers out there IMHO. They produced a wide range of versions and production blocks; Hasegawa #09382 will allow you to build a F-16C Block 30, while Hasegawa #09368 will get you a F-16C Block 40.
The Academy 1/48 kits (only three of them, IIRC) are pretty good from an accuracy standpoint, but run second to the Hasegawa offerings in final fit. There are no straight Block 30 or 40 builds here though, but Academy's kit #12204 will build into a Block 32 machine, so if you want to fudge a bit...
The Italeri (and re-boxed ROG) 1/48 kits suffer from accuracy problems and a few annoying build issues, so I would just steer clear of them.
If you want to go big scale, it would be hard to beat Tamiya's 1/32 F-16 (#60315), although it is a Block 50 bird, and not accurate for either of your proposed builds. It's also a pricey bit of plastic. The Academy 1/32 scale F-16C (#12101) may be your best bet for a large scale replica. It is a nice kit, can be built as a Block 40, and it contains markings for 2 aircraft out of Kunsan airbase. The markings are for the 35th FS, not the 80th, but it's a start...
I couldn't come up with anything else for the decals on that particular FS, but I'm sure one of our resident Viper guys might be able to give you more info.
HTH.
-YL