Wow, looks like the water made it pretty far up too. So the transformer assy was completely submerged, (other then most likely being rusty should be ok). The boardset was i'd say at least halfway submerged and depending on how long it was in water, i doubt they are going to be any good.
Either way, save what you can, trash the cab only and look around for a converted tron (alot were made into Two Tigers flying game made specifically for Tron cabs). They go cheap at auction cause the game sucked.
Paul