On change that I did in my 62 GP was to put a 3.42 first these ST-10 and a 2.68 in the back gave me what I wanted.EZ pull away from a stop sign and low RPM cruise on the highway.Would not be a good race change but for a solid cruise car it’s great.First car I did it in was a 63 421 GP so the 63 421 GP was a EZ choice.FWIW,Tom
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