Help Identifying toilet tank make and model
That looks like fairly typical old toilet guts. You should be able to replace with any &quot;standard&quot; kit - Fluidmaster, Danco, etc. The parts are actually (a bit surprisingly) very much standardized. I suggest making sure it is a kit that is adjustable to handle the old (water wasting) and new (low flow) toilets. 1993 was in the middle of the transition to low flow toilets, so it is hard to guess what type yours is. I would replace everything inside the tank at one time.