Sorry, can't help ya with the size issue...However, here's what I'm currently using. K&N pn RR-3001
Flange dia. 3"
Base od. 6"
Top od. 5.25"
Height 5"
Ck. the K&N website to find the model that will fit your app., then try Summit racing, AJ USA, JCWhitney or other for price.
Also, Tone has Green performance filters available that might fit.