While I only recently began checking the various classifieds for Mustangs, one thing struck me right away -- that is, why are so many of these classic Mustangs ('60's) automatic? It seems so strange to me that a car built for a certain type of driving (as the Mustang is) would wimp out with an automatic transmission. So, why is this so? What is the benefit, if any, to an automatic in these cars?
A related question -- how difficult is it to introduce a manual (say 4 speed) transmission to a 60's era 289? Is this common? If not, why? If so, why doesn't everyone do this?
Thanks in advance for any input.