5.3 03 yukon magnaflow ypipe and exhaust fitment on 6.0 03 denali

[solidrk881]

I have a 2003 Yukon Denali and replacement cats are crazy expensive and turns out to be 2 seperate down pipes vs a y pipe. Found it cheaper to get the 5.3 magnaflow high flow y pipe and 3in 5.3 single passanger exhaust. Anyone know if there might be fitment issues or lining up with the hangers and stuff? Hopeing not but I have a buddy with a TIG if it does have fitment issues.

Magnaflow 93419 y pipe and 15665 MagnaFlow Cat Back Performance Exhaust

 

[jough]

I wouldn't do this. Get the correct parts, even if you have to get used ones.
The 2 separate y pipes on your 6.0 likely flow better than the 5.3 one piece Magnaflow set-up. The only way I'd do it is if I could pick up the parts pretty cheap and I was already throwing cat codes.

 

[Rocket Man]

People are always trying to find the Denali exhaust to install since it flows better so I'd keep what you have and just replace the cats. I just did mine and they were $600 for the high-flow Walkers installed. That's not that bad.