Don you are right about the 2.20 low gear but the two groove input shaft M-20 from 1967 that I have has a 1st-2.52,1.88, 1.46, 1.00. You know what they say "Ya got to run what ya brung". Well this is what I have to use and I'm wondering how this will work with the 235? This was out of a late 60 vette. Wide ratio.