14x3 filter questions

[LaurenMagnum360]

so i'm wanting to do the 14x3 filter on my truck before i move, and really my only question is what size threaded rod do i need to screw into the throttle body to hold the filter lid on with?

 

[leadrofthepak]

6-8" 1/4-20 all thread to make S-bolt

S-Bolt 14x3 Dodge Ram air cleaner conversion Look at the pic posted by Dennyboy about a third of the way down the page.