4'' exhaust

[RYanmas9]

I have a 99 7.3. When I install the DP am I going to have to do any mods to the firewall or is it pretty simple to get in. This is my first time doing on so Im trying to see what Im getting myself into.

[Raul@Stealth Automotive]

you shouldnt have to do any mods to the firewall.... but make sure you have a buddy underneath the truck to help turn it so that its easier for you to guide it in

[RYanmas9]

thanks for all the help. I think ive learned more in an hour than i have in 2 years

[redstroker_2002]

it would be a good idea to put 4inch all the way from the turbo back extreme diesel has awesome deals on mbrp exhaust heres a link to check it out it comes with a free 5inch tip:
MBRP 4-Inch Turbo-Back Aluminized Exhaust System - MBS620

[strokin_early_99]

Originally Posted by RYanmas9

I have a 99 7.3. When I install the DP am I going to have to do any mods to the firewall or is it pretty simple to get in. This is my first time doing on so Im trying to see what Im getting myself into.

Not that it matters with exhaust but when was it built? It makes a difference on a few other things but not the exhaust.