I am on the verge of investing 4000.00 in my truck. The bulletproof diesel egr cooler and oil cooler, have the bottom end completely re sealed, black onyx head baskets, and arp head studs. This is my investment to ensure i have no more issues with my truck. From all my time searching on this forum and other like it, this seems to be the way to go and achieve reliability. Do I hear any objections, or input? I just want reliability to tow. Honestly if I have issues after this, I think my wife will kill me. Thanks for any input.
Unless you have emissions testing I would delete the EGR cooler but regardless if you have the testing or not and just want to keep the cooler setup, the BPD cooler is about as reliable as you are going to get. I have heard of a few failing but it is VERY unlikely and eitherway they will replace it for free.
The oil cooler on the other hand is hands down the best way to go IMO if you dont mind spending the coin. It does work VERY well and as long as you get a thermostat for cold weather you will be good to go. This is a high quality kit that is engineered for our trucks.
Like already mentioned, take your heads to a machine shop to be checked/milled for flatness, leak checked, and magnafluxed. It is also a good idea to have hardened backseats installed on the exhaust valves with new guides and a valve job. Why not get them brought back to within spec while they are out, then this way you can just drive with them until the wheels fall off.
I would recommend updated stand pipes and dummy plugs as well as injector oring kits that include the top seal for the oil rail.
Lastly, please just pay the coin for the OEM gaskets. Some say that gaskets dont matter as long as the heads are milled flat and the proper block preping has been done but the most powerful 6.0 that I have heard of used OEM gaskets so that should tell you something right there. JMO