The Howa is a HELL of a good action and that 30-338 cartridge is NO JOKE. I built one for myself, actually Brett built most of it. Just had the thing finished and had a guy come into the shop looking for a 30-338 to take big game hunting. Bought it right out from under me for about $800 more than I had into it. I have been meaning to build another one, but haven't got around to it yet.
I have some reloading gear, and some PREMIUM Lapua brass for it if you are interested. I will make you a hell of a good deal.
For a stock? Bell and Carlson are turning very affordable stocks for the Howa right now. I like their stuff, good quality and excellent company to deal with.
Wild Dog Stocks out of Australia is also turning out some great stocks, but they are pretty pricey, import taxes and all.
H-S Precision has some bad press because they are endorsed by Lon Haruchi, but I have one of their stocks and it's a great piece of kit.
Get some pictures up of this build. It's definitely thread worthy...