Alright so I’m putting my f20b back together and The specific piston rings I need won’t be available for purchase for another 6 months anybody know another set that would work for a stock f20b 2.2 liter ?

 

If your F20B is still 85mm, you can use oversize B20 85mm piston rings. They are usually readily available from Hastings and some other brands. F22A/B rings may also work but I've never tried them personally so I can't say for sure.