Re: savage arms stevens 200 short
Stocks: Stockade, HS precision, Mcmillan...etc....etc...
What do you want to spend, and how long can you wait is the real question.
Trigger: Rifle Basix or SSS
Barrel: Tons of choices in prefit. I like McGowen and Lothar Walther, but many, many more choices are available. Make sure you get a better recoil lug, either SSS or Stockade.
Go get a membership on Savageshooters.com for $12 a year to access the members classifieds. It will probably pay for itself on the first purchase from a member. There are a lot of the above mentioned stuff for sale over there regularly, and usually really good deals.