I'm sure at least some of you guys have put in the newer 2000'ish seats with integrated seat belts into your 4-5-6. If so, what were the results, pros/cons of installation; especially if you have the in cab fuel tank?
I got a good deal on 2000 Chevy 40/20/40 seat with the shoulder belts...to make my spouse happy with the little riding in the truck.

Happy wife, happy life!
I'm obviously going to be drilling some holes, but would like to tap into the expertise here before diving in. Besides it's raining.