im about to order a pair of hi flo 94100 series converters (shorter version of the original series) off of ebay. Question is, do i need the no air or single air inlet. Im thinking its the single inlet, but im not sure.
This is what im about to order for my 98 4.6. that already has straight pipes...think it will help the sound?

 

you dont need the air thingy that comes out the side. our trucks dont use those.

 

cool so i need these


Thanks.