Hello,I just did this not 2 wks. ago. I had Rip send me a system (4in. single) from turbo back to an Allied muffler(sounds good!) and a 4" to 3" "Y" pipe off of that. I took it from there to a local muffler shop to run my 2 seperate tail-pipes,which exit to the sides like the pic above. One note... I had to remove my spare as its really tight on the left (drivers) side on the short bed models! I have a rigid lockable bed cover,so I put my spare there. I ended up with more $$$ in it than I thought,but Im happy with the results. BTW- Magnaflow makes a 4" in/ two 3" out muffler,but it is near the same price as my Allied (Rips) and Y pipe combo, and the allied has a "deeper" tone that I was after! Hope this helps!