Hi Barry.....we use and stock the K&N E-2570 8.187" dia x 6.250 ID x 1.875" thick and it fits the S&H Air Cleaner housings just right...and also Fiat 128's (SMILE) and the YUGO Too! They are 85$ per set of two....
you can review by part number here
http://www.newdimensions.com/knfilters/57.html
and review prices here.....
http://www.gessford.com/cobraparts/fmisc.htm
George