HorseHauler

Yep all questions answered thats for sure, and also if you haven't already, you will get bitten by the bug if you stay around on the site... i said my truck will stay stock when i first bought it... and well, It's biting me pretty soon, bout to put an order in for an EZ....

Hummin Cummins

I remember when I purchased my rig the end of January auto's werent available with the 555. I remember the 48re was coming out later in the year for 04...didnt realize it made it so soon as to be an 03.

Stand corrected.

Do the 03 auto trucks have catalytic converters? I have seen some aftermarket exhaust systems for the 03 specifically include them, some dont.

Mine doesnt have one with the 6 gear.

bubba33

Mine does not have a cat build was in june

dodgedude361

NO CATS IN 03....WHATSOEVER The 48re became available around April or March of 03

MikeyB

Only the 235hp California emissions SO Cummins had a cat.

MikeyB