tim s

I just had Black Bear tune done and wow my truck at full throttle shifts into 4th at 100 mph. Transmission shifts so much better. Throttle response is fantastic. Best tune I have ever had done.

You don't have to do any mods to the exhaust with long tubes but you do run into the problem with the check engine light coming on because the O2 sensors are programmed to see the exhaust gas at a certain temp and the long tubes have to move the O2 sensors down stream so the gasses are colder than expected but a tune shop can fix it pretty easily... Long tubes give a much greater gain on power and torque but shorty give gains over stock manifolds due to better scavenging. If price is a factor shorty headers are alot cheaper $500-$700 for shorty vs. ~$1600 for long tube

The header part number is gp137s-c you can find them on eBay brand new and I just made an offer of $500 and they shipped them to me at that price. i recommend getting some different bolt like stage 8 or ARP for them but they are fairly easy to install only took me 2 hours partly because my phone wouldn't stop ringing

I run Gibson shorty ceramic coated header they were only $500 shipped to my door

I just installed the Magnaflow 15318 and it sounds really deep and kind of mellow quieter than I thought it would be with that 4" pipe. Headers go on this weekend

I have the volant and it fits good and the sensor is less then an inch from where the factory mounting is. only thing is that the 6.2l factory exhaust is so quiet that you hear the intake on a plus note the intake does make a decent rumble under wot

The only difference is the throttle body size ... and you can make it fit with a little negotiating

I'm thinking about running a custom true dual set up on mine