98 tahoe stock exhaust and cat size

[robhenry2990]

what size are the cats i would like to replace them with hi-flow universal. and i would like to replace the muffler to. y pipe to a si/so just looking to slip over old pipe and weld on

 

[Ceejkay]

if your truck is like mine then you are a dual in single out. i think Stock pipe size is right at 2.5" at the cats

 

[SunlitComet]

2.5" for cats. 2.5" dual in and 3" single out for muffy.

 

[robhenry2990]

thanks guys

 

[bowtiefreak]

a local muffler place can make anything fit though