exhaust pipe size?

hey guys, been searching but i want to be sure before i order. im looking at buying a new muffler for my 07 taco dbl 4x4 4.0l. im looking at either the aero turbine, or the flowmaster 40 series from the searching ive been doing. cant make up my mind lol. but i wanted to be sure (its fucking cold outside and i dont want to crawl under the truck) but is the stock exhaust size 2.5"in and 2.5" out? and if i get the flowmaster, do i need offset piping or straight through? thx guys, also throw in an opinion on these 2 types of exhaust?

i want a rumble but nothing too crazy its my dd.

 

My 2011 DCSB was 2.25. I went with a Magnaflow 18" 2.25. They stretched the stock pipe to slip onto the muffle then they welded it.

 

Anyone else?

 

need some help guys im looking to buy soon!!

 

its 2.25 but the aero only comes in 2.5....if you go 2.25 you will need to flare the muffler or pipe a little...