Answering an old thread because I needed to find the information too. On my '99 Excella, the drawer glide/slide hardware is by Houck Industries in Indiana. Both of the Houck 051 Drawer Slide Rear Mounting Bracket and Boots were broken on the same drawer. These seem pretty flimsy, but it could be from incorrect usage. I guess nothing heavy should be there, haha. I ordered two sets.
Drawer Slides, 700R items in Houck store on eBay!
I had a picture to attach, but the page locks up. I'll try to add them in a seperate post, as I don't want to re-write this for a third time.