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  1. 6

    Rearend & Transmission upgrade for 63 Riviera

    hey, so i am currently in the process of rebuilding my 1963 Riviera with a 401 and dynaflow but my plans for the engine were dual quad and twin turbo and i know the dynaflow shouldnt have that extra power going through it so i wanted to do a tranny swap any ideas?? Im looking to get around 400HP...
  2. 6

    Twin Turbo 401 Nailhead

    hey. So i know there is not much as far as after market performance parts for nailheads but i wanted to be the first to try something. A Twin Turbo blow through system. I was going to use the stock exhaust manifolds and just get them bead blasted and acid dipped so they're like new and those...
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