[Rwillia4]

Call up roush. they have individual filters that fit the TWM stacks. I think the FE and the SBF stacks are the same diameter. Look in my pics you can see how they worked for me. the added height is less than 3". they are made by K&N however I looked up the K&N part number and found nothing on them, Roush is the only place I know were you can get them.