Briggs 3 Horse Carb or Kit

Just getting back to working on this little 3 horse I've had sitting around probably from the mid 60's and it's a nice clean maroon survivor, it ran good but I gave it to my buddy to run temporarily on a mini bike and he screwed up the main jet really bad (tightened it down with a wrench) so I was wondering if anyone could point me in the direction of a new carb or carb kit that has a new jet and needle. Looks like the plastic choke lever is also broken but I think it was like that before. Model is 81302 and the type is 943546