pretty positive its a 3". I'll measure tomorrow to be positive

 

well i'm in. ordered #S5210409 today. i'm trying once more to get the good sound without all the drone or resinating in the cab.

 

Sorry, I missed this somehow.... No welds, they just helped align the pipes a bit.

@firetruck41, keep us posted I'd like to know what you think of it.

I still intend to post pics and video once I get a day of decent weather which is hopefully before spring.

 

I purchased a aero-turbine resonator #AR30. found one ebay for $25. if the mbrp is too agressive i will install it. keep me informed anyway.

 

installed today #S5210409 very good sound, maybe one of the best i've heard. the sound at idle is the best out there. highway cruising gets a b+. although satisfied, honestly it needs to be toned down a few decibles. i think the resonator will tone it down and make it perfect for me. i will install the resonator (AR30) next week. mbrp says it takes about 150 miles to adapt to ECU. my truck usually takes about 300 miles. I will wait til the muffler breaks in. then i will decide on the resonator. it just sounds dam good.if there is drone, it's in the lower speeds.

 

videos or pics lol

 

still to agressive sound in town at lower speeds. the more i drive the louder it gets. i'm going to insert the flowmaster #53070. that should tone the exhaust down some. this exhaust causes my trans to struggle to down shift and it's audible in the cab. not good.