Should be easy enough to try too, just replace one ID with another probably also being careful about which category of item it is.
Going to try that by recruiting a few NPC and seeing if I can't manage to turn one into the other probably replacing the hash ID, saving and then loading and seeing if the game goes OK or just crashes.
And then just picking up ID's for items I guess ha ha. Nice.
EDIT: Ah I see now, it doesn't pick up messing with the ship stuff just yet, that's good to know sticking to items then.
EDIT: As for legendary gear well.
Abraxas if this is the way to do it would be 000001868D04489D (Horse skin.)
But first to test, need to find two regular items, take the ID for one dismantle it and then set the ID for the second item and save and load I suppose would see if I'm on the correct path here or if I'm just going to crash stuff, probably the latter but eh it's fun to just try and see if it's possible to build up a understanding for how this works little by little. (And more so how the game reacts to these changes.)