Well guys after having my stacks for nearly 6 monthes now I have really grown on them but I am going to install a Transfer Flow tank next week and will be putting on rear exit again to prevent heated fuel in the tank ( the ONLY down fall to owning a 24 valver is having too hot of fuel). Are there any manufacturers in the midwest who build a decent 4 or 5" rear exit for a quad cab longbox 4x4? I want to keep my Jacobs brake also. How much am I going to expect to pay also? Anyone out there have a 4 or 5 for sale or want to trade for stacks? TIA, Chris