It is beyond me partner. I also have the Rossi 92, case hardened/blued with 20" octagon barrel. I simply got the Steve's Gunz DVD and kit and safety removal replacement cap. Then went about following the the instructions on the DVD and turned it in to one super smooth rifle. Now I could of bought 3 or 4 Rossi's for the price of one Uberti Winchester Clone from 1860 to 1894 (depending on which one). I've put a few thousand rounds through mine mostly black powder cowboy loads too with out a problem.
I can't help though with the wood however someone did one a while back and posted the results. It looked really great too.