The pintle should work if the hole pattern matches.
Some M37's had a swiveling pintle and some were solid.
The bridge plate should be fine, just depends if it is yellow or subdued olive drab.
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M-37's - WC-51 - M-29C - WC-25 cc - CCKW
M-274 - M-101 - G-527 Water Buffalo
G-7117 Chevy