Like into different characters? If so, then the Deadlift, Shakedown, Smolder, Bulkhead, and Autorooper kits come to mind.
Are all the kits tagged as "conversion kits" in such a way that that woudl work? Yeah! Exactly. Thanks for the additional names. Mostly looking to see if there are any in particular I'd like to take advantage of.
Siege (so far): Deadlift from Brunt Batman beyond from G2 sideswipe Bulkhead from Hound POTP: Trashcan and Rubbish from Wreckgarr Hosehead, Pyro, Heatwave, and Firecheif from Inferno Crankcase from Roadtrap G2 Dreadwing from SS Thundercracker + Clobber titan master Smokeout from Jazz Thunderwing from TLK or SS Nitro Zeus/KSI Boss + Thunderwing titans master. Titans Return: Mountain Dew Code red, Frenzy, and Enemy from Rumble Spensor, Eject and Rosanna from Rewind Tomahawk from Hotrod Minerva and Siren from Getaway Tarn from either Blitzwing or Megatron + Apeface titan master Action Master Optimus Prime from Optimus Prime Sundor from Buzzsaw Combiner Wars: Shakedown from Blastoff Skyjack from Airraid Flame from Scattorshot The Fallen From Trailbreaker Smolder from Ironhide (all Flame Cons above combine into Inferno) X-stinguisher from wheeljack Thunderclash and Innercab Magnus From Power Core Combiner Optimus
There was a wiki page of these that was started, but it needs to be updated. Maybe someone can add them to it? List of Repurposing Reprolabels - WikiAlpha
Not an official conversion kit but if you put the Renegade faction labels on any Sunstreaker you make the GoBot Pocket. Combiner Wars is the best one to do this.