I assume you want to go from:
to:
Beside the FEG plant no longer in the AK business the FEG is one of the best built and most accurate AKs out there. The blond wood IMHO makes them the prettiest AK as well.
I've done two such conversions, one on a SA-85 with FEG receiver and one from a kit with a Ohio Ordnance receiver. Check out the Tapco Compliance Kit (US made Trigger Group, Gas Tube, Muzzle Break, Pistol Grip).
The hard part will be finding a real Hungarian Blond steamed Elm stock. These guys may be of help:
http://www.globaltrades.com/ak_stocks.html
Otherwise, post ads on the AK boards and let google be your new best friend. They do pop up every now and then. On a side note, I ended up selling my thumb hole stock on AR15.com for $ 50 a few years ago so don't toss it.