The Street wedges were 1965 426 RB engines with 10.3/1 compression, a hydraulic cam and a single 4 barrel. The Max Wedges were 12.5/1 engines solid lifter cam, and dual 4's as well as the special cast header type exhaust manifolds. The 413's came out in 62 and in a single 4 barrel as well as a Maxie dual quad version. If any of these 413's or 426's were a single 4 barrel They weren't "Max Wedges" I see some of the 300's had dual quads and dual point distributors. . Do your homework!
