Check DragBikeMike's technical library on the oil cooler. He also has a carb comparision in his library.
I've had a Murray Carb on one of my Savages. Yes, easier to play with than the stock CV carb. Lancer also sells the Mikuki VM36 or VM38 that Murray sells. Murray is a pretty grumpy old guy. Lancer is a good guy and he's here on the forum. Murray and Lancer jet them somewhat differently.
I can’t find my old post about re-jetting the Murray carb, but he installs a much smaller main jet and larger pilot jet than Lancer.
Murray: 165 main and 27.5 pilot
Lancer: 180-200 main jet and 20 pilot
All other components were the exact same.
I kept the Murray’s 27.5 pilot and changed up to a 200 main jet. I had a freer flowing exhaust (unknown brand, turn out style). I could have gone with a 190 main and it probably would have been better.
If you want a budget carb, a PWK38 works well (Keihin knockoff from Amazon). It requires the same fitment modifications that the Mikuni VM36 needs (air box tube or carb mounted filter, cable mod or replace).
Here's a thread with my play by play installing the PWK38. Nice mixer for $40ish.
https://suzukisavage.com/cgi-bin/YaBB.pl?num=1714330191