My friend want to do some mods to his truck but I havent got around to looking at his exhaust. He is on a budget so I may just do a muffler swap a lt's.

What size pipes are the 5.3? Do they come with a y-pipe?

 

I have a 2.5 inch cat back magnaflow exhaust and it sounds good to me.

 

buy ceramic coated pacesetter LT an the OR-y pipe, its 3" exhaust.
do a 18" magnaflow itll keep it a lil quieter but nasty loud when you get into it.
thats about 600.00
or buy the black ones an have them powdercoated but its still gonna cost about the same as the ceramic coated ones.
good luck with the mods man, thats the cheapest hp adder there is other than a CAI an tune

 

stock pipes are 3''?

 

actually 2.75", 3" fits over an 2.5" fits in it.

 

+1 for headers.

 

the Magnaflow 16567 is 3" system w/ a 4" tip