6.5 is what it is.
That said I agree it's not a cummins etc.. Mine has been doing great all things considered. It drags around rock pulls my mini and other similar things.
Could be better on throttle response and pulling heavy up hills. Hopefully I can learn some things to improve it without...
Only had it for a couple years. Didn't know much about the 6.5 but can see why there's a dedicated following.
I've had the cummins 5.9 and the 6.7 plus a variety of class 8 trucks so not my first rodeo.
I think the older idi is really interesting and plan on just waking mine up a little bit to...