Hi
Don't know whether this helps but March 73B-17 was the March RX10B Can-Am car of Seann Burgess in 1965 and 1986. He bought it from a Joe Ostrowski of New Jersey in 1982. Joe had purchased it from the DRC Team who ran it in 1973/1974 for Bruce Macinnes and Ron Cohn. Seann has restored it as the #66 McInnes car but I'm not sure if that part of the identification is certain.
Allen
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