I currently don’t own anything with a manual transmission, but I am always thinking of possibility’s. I have seen some late Saginaw 3 speeds with overdrive for sale on e bay. Big $$ for sure. My question is can a regular Saginaw 3 speed (or 4 speed) be converted to a overdrive unit? If so what would need to be changed? The main Shaft? Is the Overdrive transmission longer that the regular 3 speed? Any info would be appreciated. Jay
