That I can't say since I only owned it for about a year and in 2005 schools around where I lived at the time were tossing them left and right.
So long as you're doing like-for-like (tray for tray, slot for slot) I think they're interchangeable. I almost want to say the internal CRT plastics in the iMacs are "Spindler's Revenge" since I've seen a whole lot of them that are just splintered to pieces. One of them was so bad the CRT "adjusted" like it did in the Monitor //, though the tray loaders seem to be stronger than the slot loaders.