or you can go to this site

http://www.aircraftinternational.com

click on the exhaust page and go to KS Custom Exhaust parts where you will find all the parts needed to make up any type of exhaust you need to. all parts are stainless and he sells brazing rods that work with a MAPP gas torch that work incredibly well. will never come apart

was just there this morning picking up parts to make up a custom header for an oddball engine.

you can always call him. better than emailing him.very knowlegdeable and helpful