Just pick the reducer size that matches the diameter of the header collector. Bolt it to the collector ring, and weld on the tailpipe. If you have a header without the collector ring, use Hooker slip-on reducers. They're sized to slip over the collector and weld to the exhaust pipe.
Product Features:- Bolt/Slip-On Reducer
- Kit contains "one pair".
- 3-Bolt Flange
- Fully-Welded Construction
- Durable 16-Gauge Construction