Need some help with stack sizes???

[bmeyer]

right now i have a 2001 dodge cummins with 5 inch stacks that have a curve going back on them and i'm looking to sell them and get me milter cut ones so if you have a used set please tell me. I was wondering if i should put the 4 inch stacks on instead of the 5 inch because i would like to pick up a few miles to the gallon. so my question is will i get better fuel mileage having the 4 inch stack than the 5 inch? thanks alot brent

[MYeary]

6" SRW & 7" DRW :thumbsup

[bmeyer]

anyone have info for me???? brent

[BBRam]

Hey there Brent, I doubt you would see any difference in milage bettween the two, so stick with the 5''. :thumbsup

[bigdodge25]

Stay with the 5" stacks because the 4" will look to small. I have mitre and they make your truck look bad.

[Mike516882]

ID say either stcik with the 5" which is small IMO or get the 6". Just the tips wont add or decrease milage on your truck...

Mike