On all SPD Performance's 304 stainless catted downpipes, you get:
Increase Performance
Improved turbo spool time
Better fuel mileage
High flow +500CPSI catalytic converters that do not cause check engine lights
TIG & MIG Welded 304 Stainless Steel
Factory style flanged clamps on all flared turbo and exit connections
All hardware included
 
Please allow downpipes with GESI cats 2-4 weeks to ship.