I am thinking of buying stacks for the truck, I also want to do a dpf and cat delete. How do I do a dpf delete and cat delete and still do stacks? plus I don't know what size the tubing should be? and also how big are your stacks (height and diameter). I want people to see the stacks just a little bit over the roof. the computer is going to re tuned using spartan. the stacks will be going on as soon as i graduate, i'll post pics as soon as i can. thanks for your help

 

I Love stacks!!! im puttin 4" from the turbo back including stacks. my 12V has none of that DPF stuff. I have heard you want to stay below 5" exhaust until you hit a certain HP.
Good Luck!

 

thanks for the help bro