Its funny but I'm actually converting a couple of my drivers back to this from a spin on. Its a bit more hassle to change but I think they work better. If 70 Acadian SS doesn't want it I'll take it.
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ken from northern Alberta
38 Willys pickup electric
39 Buick (327 with 700 r4)
66 Grande Parisienne 396 with AC (built October 26 1965)