One performance-oriented jetting kit available for the 82/83 Gpz550's using TK26 carburetors is made by Dynojet, but can be found under other brand names.

The kit is Dynojet Kit DJ-2107.003 .

The kit includes new main jets in sizes 76, 80, 106, and 110, in addition to DNO110 needles.
Here is the fact sheet listing the components in the kit. (click on it to enlarge)

Here is the trouble shooting guide that comes with the kit:
Click on the image to enlarge it.

Here are the installation instructions (in two formats) that come with the jet kit:
Tk26DynojetKit2107_003instructions.doc
Tk26DynojetKit2107_003instructions.pdf