Have r-134a conversion in car, which drive belts should I use?

[thatphysicsguy]

On Blunttech, there's a 12.5x823, a 13x775Li, and a 13x825La

And I have no Idea if they're the same or not because the 13x775Li says it's equivalent to the other two sizes.

I'm just very confused. If anyone has some insight, please help me out! :)

[603Racing]

It's the same compressor right? Just get a belt from your local auto parts store.

[vpilarrt]

The 12.5x823 is the stock size

[thatphysicsguy]

Thanks, guys