"I believe that the wood finish cabs and the grey finish cabs may have used different badges altogether."the subsequent A and B-suffix series have the cabinets with beveled front trim, and no extended overhang on the top/bottom.So, I expect the wood/gray has less to do with anything vs which series is under review/comparison.
https://www.lansingheritage.org/html...s/jbl-catl.htmcheck out the pro catalogs '71 - '74 vs '76At this point, you could have something made that looked 4330-style to match the cabs, but change to '4333B' to indicate your customization... or anything else that floats your boat :)