I have a pair of K&N Filters for sale. They will fit 33-35mm carbs. They measure 3.5" diameter, and 4" long, with a inside flange diameter of 2.063". I bought these from SAVAGE earlier, and never ran them. They are in excellent condition, and were freshly cleaned and oiled when SAVAGE sent them to me.
The K&N part number is RA-0500. Here's the K&N link: http://www.knfilters.com/search/product.aspx?Prod=RA-0500.
Asking $45 shipped.