I don't think they're claiming it gives X gain (I'm sure some engineer knows the number, but it's not been released), they're just saying it's an integral part of feeding the new beast. Which I don't doubt, I guess...
I was surprised, a local dealer had a CCSB LTZ on the lot, and 2 RCLB's, all with hood scoops lol. Boy do the Regular cab Long Bed "base" model trucks look funny with the chrome hood scoop, IMO...
I just bought one for my dad for his company truck, and they're dang nice. He got a LTZ Z71 with the painted grille and bumpers (much better looking, IMO) and it has the 5.3 and the 8 speed. It moves out, but they just went to MO and he got upwards of 20 MPG. I think if he'd have kept it closer...
You'll need a fuel line disconnect tool, and you can try to replace the o-rings that are in there. Otherwise to replace the ends you'll need a nylon fuel line repair kit, there's a special tool to fit the new end into the line. Not sure how it works, but I think you can rent it.
I talked to our local mechanic and he didn't want to do it, but he said another guy had it done by a Diesel shop about 45 min away and it ended up being well over $5k. Is that too high? Dad says there's no way he'd spend that much, he'll trade it in first...
We had the WP fixed on our 05 a few months ago, and now it's losing coolant and the tank is full of pressure. Pretty much guaranteed HG's? What's the repair bill on that going to be? $3500?