These headers are designed to be really tight to the block for maximum clearance. There is no flange on the end, you can either use a band clamp to attach it to a 2.5" pipe or get out the welder. We recommend an LS3 Corvette starter for maximum clearance.
Manufactured and drop shipped by our friends at Flyin' Miata. Stainless steel with a lifetime warranty. Sold as a pair.
Note: These headers have a small dent on the drivers side to allow clearance for the Miata steering shaft. Although not necessary in the s2000 application, these are production headers and the dent cannot be removed at this time. This dent is BARELY noticeable when installed. Performance degradation is negligible at best.
Fits 2000-03 (AP1) and 2004+ (AP2) vehicles. Images show installation on an AP1 s2000.