The Walker website shows 3" ID tubing with a 3.5" exhaust tip. I'll put a tape around mine tonight when it gets back to double check.
If you travel alone and like to hear the motor more than the stereo, the Flowmasters are awesome...
x2 on this one. 3” ID w/ 3-1/2” tips.
Welcome to the forum - Michigan here, but I spent many of moons down in NC.
Whatever you decide to go with, just make sure to consider the amount of heat dissipation from your new gear. On some rigs depending on the engine size and style/size of the upgraded header/exhaust there may be a need to either wrap them with a heat tape and/or the need to wrap some of the other “components” (including but not limited to spark plug wires/boots, starter and the electrical wiring running to the starter, tranny coolant lines near the headers…etc).
When I was looking for a new exhaust (2011 Denali 6.2l) I’m pretty sure Doug Thorley shorties were one of the few headers (aside from custom work) that worked with our big @$$ engine, without interfering or needing to wrap EVERYTHING - headers, plug wires, starter and electrical.
Don’t let this sway you, rather just giving you some food for thought.
Plus I know NC has some emissions laws, so be mindful of any cat or muffler deletes.
