I find the Dodge cabs and seats to be more comfortable than either Tundra or GMC and have them all. Probably depends on the individual though.

I just did the swap. Its a factory ecm just like your current one, only reprogrammed.
No markings on it, and ecms dont match to vins.
I waited a little bit too, but wished I hadn't.
If your dealer reflashes it for some reason, you can get it reloaded back to the tune easily for $50 with Green diesel engineering.

It is pricey, but you will spend that small investment and never look back.
Over the life of the vehicle, pocket change.

Thanks. Yeah I'm just worried about them finding it if my motor bites the dust and denying a warranty claim.

Bought mine in February. Best truck I have ever owned for sure.

I had a 14 Eco that I loved but it had electrical demons. I traded out of it, but plan on giving them one more try in a year or so.

The eco diesel has came a long ways, And I mean that. it seems they worked the timing gears out and no more jump time and ruining heads, i would love to see one in a long wheel base with towing mirrors like ford has with the eco boost towing package . For the Ford, I know people love them people hate them, but the poor head machining and no more replacing heads we just replace the whole engine kept me from loving it. The 6.7 is no doubt a powerful motor and did there neat home work on liquid cooled inter cooler, reverse flow head design etc. My neighbor has one with 65,000 on it with no problems.at all period, then you my other nieghbor has one and has had hell out of his with only 40,000 on it and has 1 engine replaced already, just alot problems since new. Same year models, no tuners, motor craft filters with oil changes at 5,000 only bumper pulling. It just seems like now days no matter what you buy its getting to the point of what day it was built...lol. hangover mondays, or tear your [censored] fridays.