I added an Anderson Power Pipe to my Vortech and then a 75mm Ford MAF on the end of that. The problem is that it's so long in the fender that the only K&N filter that fits is the RU-2510 which is only 3.5" long. Unfortunately, there is almost no flange on the MAF and the filters keep falling off. So, what is everyone else using that actually fits in the fender? My only option right now is to toss the Anderson to make it fit again and then drill holes in the filter to keep it from falling off. That's sort of ridiculous so I'm thinking there is a better option.