I added a few things to the Trumpeter Su-30MKK - probes and the antenna behind the cockpit, proper pylons instead of the old-style ones, the bumps that hold the landing gear bracket, and a refueling probe.
While I think Trumpeter decals are the best, the numbers provided were the wrong font and size, so I printed new ones myself. I also made ones for the formation lights.
Thanks to Stevens International for providing a new canopy because none was included in the box.