455 "Ramp Lok" Exhaust Manifold Bolts These are Made in the USA and feature the "Ramp Lok" design as used by Buick. I have 2) kits to choose from - 1970 - 1971 and a kit for the 1972 455's which in most cases have a slightly different Passenger Side Manifold. My website lists the Correct Part Numbers so you can check your application before purchasing! Pricing starts at $35 plus shipping (Usually around $9 for Priority Mail Flat Rate Box) Click here for a Direct Link to my Website > https://www.stage1restoration.com/product/bolt-kit-455-exhaust-manifold-bolt-kit/ I accept Pay Pal and all major Credit Cards. Order by phone by calling (715) 874-6037 Shop Hours Monday - Friday 1 pm to 6 pm Central time. Thanks for Looking, Best Fastener Collection in the country for 1970 - 1972 Buick GS, GSX & Skylark! And Made in the USA. Don't like dealing with the Big Name Retailers? Give me a shout. I'll be happy to help and share 30 + years of experience in Racing & Restoring Buick Muscle Cars. Check out my New Website for 100's of Buick GS, GSX & Skylark Restoration Parts! I now have an OEM Page as well with 100's of parts to be added as time permits! www.Stage1Restoration.com