Put a flow in place of my factory muffler about 10 months ago and want to get rid of the factory chrome tip it came with and replace with something else. What diameter is factory exhaust where the tip is? I dont have the truck here today so I cant go measure it. Oh yeah, 06 with 5.4

 

its probably 2.5 inch.

 

2.5 from the Y pipe all the way back

 

5.4L definatly 2.5"

ooorrr chrome tip you say? if its factory from the chrome pkg idk might be 3"