Thank you Des!
No, "stealth"back just means having an aftermarket downpipe+midpipe and stock catback. You will need a 2.5" reducer if staying stock.
Typically aftermarket downpipe include the midpipe as 1 piece.
The name stealthback was created from TurboXS for their product, which is a 2 piece set, downpipe and midpipe.
Posted from a fone.