what problems can I expect if I want to swap out the stocks on either a WASR or Bulgarian AK with a Ironwood Chinese copy stock set? ( http://ironwooddesigns.com/IWDNEWMAK_2.html ) or to put it another way can it be done? I preferred the type 56 stocks but even when I have said cash for the real rifle I can't find any locally. I may be a bit off on this but it can't hurt to ask...