I just got my truck back with 6" mitres out back. I'm running 6" turbo-back, but I don't think they're too big. The Aussies would look good at cab level or 2-3" above possibly. Here are the pics of my setup. Check my gallery for more pics.

[IMG]local://upfiles/16793/88538B4C79694A9D868F5CA6F197BAE9.jpg[/IMG]

 

i always told myself when i finally get around to getting stacks that i will go with 6"..... i think 4" is to small and 5" is alright but when ever i see 6" it always stands out. i have seen trucks with 8" stacks and those looks WAY to big but then again its all personal prefrence!

today i just turned my turn down tip facing outward so now when i blow smoke (which i love love love so much) it clouds up to the right of the truck instead of just making a big sloppy cloud under the truck. smoke coming out of stacks has gotta be a cool feeling

 

haha yea smoke is nice...jake all you need to do is throw a 90 degree on at the bottom...