Started off on my own with the basic conversion...US stock, Tapco G2 FCG, US Galil style PG
Took about 1 hour
I decided I wanted a little more ofcourse...so I ground off the stock mag release rivets and sent it off to my local gunsmith (Randy Kline @ Sledgehammer Arms Works) I hand him mill out the trunnion lugs to accept unmodified AK74 mags, weld up some (not all) of the extra holes, rivet in an AK74 trigger gaurd/mag release I had laying around and install a Dinzag bullet guide.
After that work was done a AK74 mag with a ROBARM follower would fit/feed 30 rounds no problems!