Normally, yes. What brand? Why are you bothering with equal length shorties. They are a PITA to install and the HP or torque increase is marginal IMO. I would go with regular shorties or if you are that concerned about max HP LT headers.
They came with the car. I switched over to long tubes and i want to sell the shorties. I have been asked if they fit the stock H-pipe. They are BBK from an 89 manual.