The clutch disc should fit. Watch the trans tho, the one for the 40 series is no stronger than a Chevy. The big ones are as strong as Caddy, but the side shift ones ('39 and up) are selector boxes and need special shifter. You can put the floor shift top on the '39 box ('40 on '40 big on big). The mounting bolt pattern on the front is also different.-Jim
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