The sm420 was available in 47-67 chevy 1/2 ton thru 2 1/2 ton trucks, it's
a four speed with granny low. Pix can be seen at
http://www.off-road.com/jeep/tech/convtrans/gm/gmsm420id.html
I've heard that gamma goats come with these, can someone who might know
look at the pix and confirm or deny? If you could reply direct as well as
to the list that would be great. Also, if the answer is yes they're the
same, and you have one in good working order, please let me know. Thanks,
Alan Loshbaugh
Columbia, Missouri
1976 FJ40-Black Beast, 1965 FJ45L-under Construction, 1967 M715-the Hulk
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