I just purchased a Stage one NX kit on ebay for $300.00 that also came with bottle warmer and a purge valve. Ive done the searches and the research and will be installing the kit myself and just finished bolting the bottle in the bed (pics can be seen by clicking on my sig.) I was just wondering if it is better to run the line the whole way under the truck or route the line through the cab. I will be wiring up the swithes tomorrow and running the lines...damn this is tedious but hopefully it will be worth it

 

I ran my line thru the hole in the side of the bed that is located near (and into) the stake poket, then down along side the stake poket itself. This eliminated the need to drill any holes. Then I routed the line inside the framerail all the way to the trans tunnel and then up into the engine compartment. I also made a mount for my bottle which slides down into the slots that are in the bed for 2x4's which also eliminated drilling any holes in the bed. See Picture.

 

I just looked and I never seen that hole in the side of the bed I thought that the nozzle had to be facing down? Im not high enough off the bed to go to the side like that it would kink my hose. Thanks for the info and I will try to follow the same route the rest of the way, nice custom set up by the way

 

The nozzle is facing down, I didn't include any pics of that part of the install. As for kinking the line, belive me, it's not even close to kinking the line. There is really no need to put any holes in the bed, unless that is what you want to do. Here are the other pics: