If it is deleted and had ARP head studs,rock that bad boy!!! Like people said above, get gauges and monitor the vitals.
i've had a 03 7.3 and then an 07 6.0. The 6.0 is a powerhouse but when EGR crap started to take a dump as 104K it was time to replace.
I should have never sold my 03 7.3...... Now i have 2014 Duramax/Allison combo and it is a beast and love it! Deleted and tuned. Tows with absolute ease.
I had 2 Cummins between and the 2010 3500 was great but I deleted it as well. The newer EGR junk is the achilles heal in a diesel. Not needed IMHO.
2014 V-Cross Platinum 365VTSB (Bought Labor Day 2014)
TV: 2016 GMC 3500 Denali - Stock for now.
Days Camped 2015: 17
Days Camped 2016: 28 so far