The Donut Off Of The Exhaust Manifold Can Be Found At A Local Carquest Store. There Part Number Is 9051. It Costs Around 3.00 Bucks. It Worked For Me. It Is A Little Different But It Worked. Hope This Helps Out!
When i bought mine which i didn't need and still have it was like $30 at my local yammi dealer. If you need one i'll sell it to you for $20+shipping, if you can't find one or find it cheaper. Some may say its expensive but its brand new and i'll hold onto it if not.