Hey MF,
Glad you popped in mate, otherwise I would have bought the wrong sizes. Now I remember I once bought the longer filter for the corvette, and it only fit without the foam sponge. With the new(old) PT Mustang I just thought "Yeah its a powertorque = long filter).
Just regarding the 'tiers' you spoke of, I would have thought the cylindrical ones were higher tiers, as the one on the Corvette has jagged column and white painted headings for each area on the throttle, while my Tornado has a square chamber, straight throttle shaft with a sticker. Of course I haven't seen one of the earlier square boxes, so this might explain the cost cutting involved here.
Thanks for the heads up mate.
