I'm looking for an exhaust for a 1977 yz 400 where can i find one?

Question

1977 yz 400 exhaust is hard to find for an old heap that i want to get running so i can race in a desert relic race.

Answer 1

Try this Yamaha site
http://www.yamaha-motor.com/sport/parts/home.aspx
If you couldn't get one at a Yamaha dealer, you probably won't be able to get one here.
Do a web search for "motorcycle salvage dirt". Some salvage yards only specialize in dirt bikes

Answer 2

dennis kirk or old bike barn .com