I know River City Diesel is all about the tunes for the International 6.0's and 6.4's and from what i've heard they're pretty good tunes too, not cheap in my opinion, but you get what you pay for, and I'd get head studs asap, and on the machining of the heads i'd be cautious because i've been told that when you machine the heads on the 6.0 you can change the compression ratios and that wouldn't be a good thing, so i guess if you do decide to do studs take the heads to a machine shop and have them checked, if they're not good then maybe get new heads, i don't know if i'm wrong that's just what i've been told about the 6.0 heads

The 6.0 heads can be machined up towards .008", but anything over is a no-no.

I prefer Innovative tunes myself.

RCD is bigger with 6.4 stuff.

For a 6.0 I'd stick with Eric@Innovative, Doug@gogo, and I've used Vivian@quicktrick (formerly DJ's tuning).

i found a guy in houston area thats local and he writes em and he says he gives 1 mild tune free to test what he has the u pay 100 bucks for the other 2 if you like em so i think im gunna go with him. rode in his truck (exact same parts as mine minus the stacks) and the thing was smooth...lots of power but not so much id worry about breakin anything

It's not so much making the power, it's getting tunes that have good tranny tuning that is important. I'm sure there are tons of good tuners out there, but the one's I listed are the most popular. It's up to you. Innovative does a bundle of 3 tunes for $165 for comparison. My quick trick tunes was $50, and I believe Doug at GoGo does $50 tunes as well.

Yeah I would have to agree with the tranny tuning issue, anyone can make a tune with power it's the powertrain that generally suffers, take bullydog for example, they can make some big power numbers but their trans tuning is terrible and rips stuff up

im with ya but what im sayin is that it was makin the lvl of power i want and the shifts where nice and firm. the truck felt really go all around...it didnt have jerking shifts where it felt like ridin in a stick and having the guy pop the clutch. all around it just felt right for what im lookin for so i think im gunna get one from him and see how i like it. and if anything with it just doesnt feel right(shifting to late or what have u) then im gunna delete it and get my tunes somewhere else

I agree with what you're doing entirely, support local if possible, it's something that has been lost in todays Internet world where people just buy stuff from whoever is the cheapest which I have been guilty of more than once