I just purchased a Saiga 7.62 x 39, 16" "AK" at the Indy Gun Show and am going about the process of learning about modifying these and 922. I have a couple pistols as well.
I keep seeing Saigas and Yugos for sale and it's killing me. An INGO member had a beautiful side-folder AK for sale a couple of days ago that I would have loved to get my hands on.