many options....
other than a stock carb rebuilt from ground up with new jets and a secret tweak or two, the best bang for your buck is the Mikuni VM round slide.
It is a great all around carb for a big single;
cheap to buy, easy to work and cheap parts replacement.
the cheapest route is to get a super cheap 36 or 38mm VM on ebay and then rejet to desired configuration for the Savage, with appropriate mounting flange and throttle cable custom made for it.
Expect to spend $150-200 and a lot of time putting it together, jetting and tuning.
It is a fun project if you like to tinker.
I have a rebuilt stock carb if you want one of those.
If you wish to discuss a Performance Carburetor kit then PM me.
You can read of it here:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=1204492783...If you want to talk about how to set up a VM carb on your own let me know and I can give you some guidance to save time and money.