03blkstang

any one know were to find JUST the filter for a Mac or BBK Fenderwell Intake and are the entrances all teh same size??
when i bought the car the previous person had installed one of those 2 intakes i wish i knew which one, but i need a new filter
for teh fact that the other one got loose n just fell off n it was to destroyed to clean it...so i need one and i cant find one
ne one know were and if the size are the same? and while were at it whats a good brand to put on ??