At the HRA web ,
www.hra-online.de are for sale described as , 1] ex Ulf Svennson BT38 F3 , described as chassis plate on car , however # not given , and also as a partly basket case, 2] ex. Wison Fittipaldi BT38 F2 , plate on car however not given , should be BT38-25.
Also still at
www.carclassic.com is poor old BT38-23 , chassis plate in photo. This should be the Uniacke Chemicals car of Richard Scott at Thruxton in April 1972 , thence after that the F.I.R.S.T. car of Peter Westbury.
Bryan.