Wes2003 banshee

I just built a 4 mill serval 421 banshee and I’m trying to run stock carbs for just a little tell I can get bigger ones. I need to know what jets I should be running. I have gold series pipes with t5 silencers, stock reeds, +4 timing advance, pro design cool head with 20cc domes, running 110 race gas. I’m at sea level at Winchester bay, OR.