sb exhaust manifold bolts and washers

sorry, I thought you were using 68-70 340 manifolds. Some of those bolts are really different from what you need. I can stick 6 factory washers in an envelope and send them to you. Contrary to some posts, I would use them on all 6 places (studs and bolts) on the driver's manifold that you posted a pic of. They do a better job of spreading out the strain on the cast iron 'ears'. Regular washers get pulled concave and put pressure from the hole out leading to busted ears. If you have to use flat washers, use a thick grade 8 washers that will not distort. If you want the washers send a PM with your address.