2002 7.3 need help

[2006]

I have an 2006 6.0 just did several things to it like egr delete,cat delete, hpop fitting,coolant flush, replaced with CAT, custom tunes for sct tuner and edge insight cts with Pyro and fuel pressure. Got most all information here on the 6.0 board. My brother has 2002 7.3 bought new has a little 100000 miles on it has been well maintained but has towed quite a bit truck is still running good he just wants to know what mods keep them running good, towing good, better mpgs and possibly more HP. A suggestions appreciated forgot to mention truck is automatic. Thanks in advance

[jesilvas]

Intake, exhaust, brake/tire maintenance, proper fluids, valve body, 6.0 cooler, external trans filter, coolant filter and flush, either FRx or RR to name a few. Just maintenance basically

I made my Samsung SGH-I997 send this.