A '95 and newer 200 PWK will fit right in.
So will a number of other carbs, but I assume you're looking for a 35mm to replace the 33mm that comes on the 220?
If you're considering buying some 'used' thing off some auction site..consider that you will likely get a headache or two. The cap tube is probably shot...the slide may be scratched...it'll be dirty...who knows what the float needle/seat will be like....
...yeah...you would be $$ ahead getting YOUR carb modified.
Well...or get a modified air striker from RB...and sell your relatively new PWK to pay for most of it!
You know about the finger adjustable air screws? They are cool! Everybody should have one! Well...anyone interested in tuning their carb anyway.
The larger carb does help the 220's anemic top-end. Doesn't altogether fix it...but helps it, for sure!