which 5r filter?

[6.4stroke]

I have a stage 2 cold air intake on my truck with the pro 7r filter. I would like to replace it with a 5r which 5r filter should I get seems like theres a lot of different sizes.thanks

 

[taterthedog]

I went the other way on my 6.4. Took the pro5-R off and put on a PG7 with a prefilter. The 5R definitely flows better, but it gets real dusty up here so I needed the extra protection. Should be a number on the filter that AFE can cross over.

 

[08BIGRIG]

I would get the pro guard 5r and run a prefilter. You get good filtering with the prefilter and great flow of the 5r. This is the setup that I have been running on my truck for about a year and a half.