Review on Sierra International 18 1953 2 Manifold by Chris Wilson

My only suggestion is to forgo using the mounting bolts that come with each header and instead buy 3/8 x 16 fully threaded bolts of the same length. I bought 4 of these distributors to use in my 1982 Trojan 36' Tri cab with twin 5.7 liter 260hp Mercruiser engines. The manifolds fit perfectly and with the help of studs I was able to put the new gaskets on, then put on the manifold, the washer, then the lock washer and then the nut. Tighten them all and the distributor was on. Less than an hour per manifold, start to finish, including installing risers on each manifold that was on the engine.