i have a question about using the 800 ps gear box on a 66 chevelle. what pitman arm should be used to match the idler arm? the pitman arms from the s-10, caprice and monte carlo g body seem to have a different amount of drop. who has info on this or done this swap? did you use the matching idler arm? i've done a search and the
three vehicles above plus the grand cherokee are
mentioned but the pitman arm just seems to be a given? jimL82 your input here would be greatly
appreciated. thanks in advance.

You need a 64-67 P/S pitman arm with the casting number 5693764 on it (sometimes the actual pn 5693763 is on it). E-mail me if you can't find one.