[RACER X #99]

I have the same setup on my 408 Dart. I bought a drop base 14" moroso filter with a 3" high element, then I cut the 1/2" mounting base off of the filter. This sits the base right in contact with the Holley carb float adjustment so I punched out two holes in the base to clear the adjusters. I then found two rubber grommets that just fit over the carb adjusters and seal the bottom base to the carb. I also had to trim the base where it comes in contact with the distributor.
It ain't perfect but there is no point in spending money for performance parts and then choking your engine with those small Stellings type filters.
If interested I can take a few pictures and post here for you.

RD