Does STC need to be replaced on 2003 6.0??

[stuntz954]

I just bought my first 6.0. I drove a 2000 7.3 to 325,000 miles and sold it years ago. Great truck.
I bought a used EX with a 6.0 187,000 on it. From original owner. I am wanting to do some preventative maintenance to it, before I put a programmer on it. I will be traveling a lot this year.

I am doing a EGR delete today. Should I also change out the STC? I have the kit from Ford already.

I bought oil rail plugs but I found out that the 2003 oil rails do not have them. Is this correct?

Thanks for all your help.
I have already changed the springs out to a 99 F250 front and rear. All from info on this site. Thanks guys.

[Big Angry Hillbilly]

There is no STC at the HPOP on a 03 04 truck. 05-09 has the STC fitting.

[stuntz954]

OK. Thanks that helps a lot. I have been up late nights tyring to find the information on the internet.
Any other things that I need to do, other than trashing the EGR?