OK so I know its 3.5 dual and looks like I still have my catalytic converter. Is there anything else to know?

 

Did you measure the pipe itself or just the Chrome Tip ?

 

Chrome tip. It definately reduces as you can see in the first pic.

 

you have a 2.5 inch exhaust.
ANd you do not have a dual exhaust. You have dual outlets. Completely different than a true dual exhaust.

 

Looks like either a Flowmaster Super 40 or 40 series Delta flow muffler.

 

It looks like my Flowmaster Super 40. The whole system looks just like mine.

 

Looks like the Flowmaster that I chopped off my truck and tossed in the metal pile at the landfill as soon as it was clean enough for me to read the name.
I had wanted a Flowmaster muffler for about a year after getting the truck, then one day when my sister was getting her Super 40 with dual outlets installed I decided to see if I could find any markings on mine while we waited and sure enough it said Flowmaster across the bottom of it.

 

looks like you still have your cat, doesnt look like it would be "gutted" or not, then its either 2.5" inch or 2.25" inch pipe typically thier 2.25", with a single inlet and outlet muffler then a Y pipe in 2 tips, suprisingly their smaller than most ive seen, most ive looked at are around 4.5".

 

Is it the stock ones?

 

yup stock cat, single in/dual out flowmaster