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Comments about Sierra 18-1976-1 Riser with 7 4" OD Nipple for V6, V8 Applications:
The unit fits and comes with all fittings, plugs and gaskets. The downside is that you will need to remove the paint from the surface of the joint that connects to the exhaust manifold. I used a wore brush to scrape off the paint. Takes about 15 minutes...but it will properly create a shiny and smooth surface ready for gasket and sealer.