Pictures and Comments from Shell Black
[Note: The "B" pipe is the portion of the exhaust system between the catalytic converter and the muffler.]
In the archives of SE-R performance you will find Stromung one of the first aftermarket vendors,
also making dual tip exhausts. This piece [the "B" pipe] is mandrel bent and only slightly larger in diameter than
the stock piece. As the photos illustrate it is coated to prevent rust and follows the
exact path of the OEM pipe and uses the stock hangers.
The price at the time I purchased it [June 1997] was $160.
A side by side comparison of the OEM B-pipe and the Stromung B-pipe