For those looking to build a custom K24Z3/Z7 downpipe in any chassis, we now stock the cast exhaust elbow that's used on our K24Z3 Miata downpipes.
For this application, the elbow MUST be cast. A welded oval to round transition will eventually crack. Save yourself the hassle and headache of ordering a different downpipe and cutting it up - just use this piece and you're good to go.
Includes two O2 sensor bungs and plugs.