The Brabham BT38B was a variant of MRD's new monocoque Formula 2 BT38 model intended for SCCA Formula B, and fitted as standard with Hart 416B twin cam engines.
Brabham BT19, Classic Cars Wiki
1972 Brabham BT-38, Team Rondel F2 - Motorsports Market
Brabham BT51, Classic Cars Wiki
Spark 1/43 Brabham BT38 1972 Monza F2 Winner #1 G. Hill
Brabham BT38 F3 1600
Brabham BT38 F3 1600
Brabham BT 51 - The AZ of Racing Cars
1972 Brabham BT38
1973 Brabham BT40
Brabham BT38C car-by-car histories
Brabham BT49, Classic Cars Wiki
Brabham BT38 car-by-car histories
SPARK 1/43 - BRABHAM BT38 - WINNER GP HOCKENHEIM F2 1972 - SF241