Exh sys for a stage II "street car"

[NEARING]

I just bought this car and the current 3" downpipe and exh sys is not up to snuff, I've been told.
thanks

 

[STP]

You won't get anything bigger than 3.5" over the axle effectively. Even at 3.5" it's gonna be a custom job. I chose to build my own 3.5" system out of several Ubends tigged at all joints using a 3.5" Race Magnum. HTH Scott