How's it going all? New to the site. Thanks for lettin me join. I have a 2007 (not classic) Sierra 1500 Crew cab 2wd with a 4.8. I'm in the process of getting a bigger and heavier boat. I want to get a cam for my truck to help out the towing a bit. I had a jet boat before which wa easier but now it's looking more like a 24'-28' boat. My goal is to get closer to 400hp and 400tq. I was thinking that along with the cam I would install a set of 4.30 gears (I have 33's) headers, cold air intake, port n polish the stock throttle body a custom tune from Cunningham Motorsports in Lake Elsinore, CA. The HP & TQ numbers may be hard to acheive with out heads n intake manifold. Any input or suggestions would greatly be appreciated. I thought about a 6.0 swap but, If i can get close to the #'s the 6.0s produce without pulling the motor that would be great. The blowers n turbos would be a lil too much $ at this time. Plus it gets hot where I will be towing and don't want to mess with a power adder too much in 100+ degree heat.