I got the extension with my 8x10. It is a nice, solid camera. I just might try making my own back. I have a table saw, and a few other tools, so I imagine it wouldn't be too difficult. Just have to get around to doing it. I want to shoot film, not fix cameras, but if I'm going to keep using these old antiques ( I have a few Graflex SLR's and pre-Anny Speeds) I guess I'll have to keep working on them. It's fun, I shouldn't complain.