nobody can tell you 1 exact jet, each engine is different along with elevations and current temps
we can only suggest a range of jetting and you'll need to start large and plug chop down to determine correct jetting for your exact situation
buy 270 thru 310 mains and a 6 pack of plugs, then start your plug chops....
https://www.blasterforum.com/threads/how-to-plug-chop.53237/