Starter drives, 1957 and 1959

["L.Andrew Jugle <lajugle@xxxx>" <lajugle@xxxx>]

There are two '57 drives, small and large. Large also fits 59 (must 
fit 58???). Small is IMPOSSIBLE to find. Been there, done that--no 
T-shirt, but got two starters in stock that are right for the '57s 
and one that is '59----I think. Re-builder looked for a YEAR for 
small gear '57. Besides gear sprocket size, there is a difference in 
pinion diameter.