[MOTORHEAD]

The SS round expansion tank and upper rad pipe scream BDR, but I see an upper front wishbone peeking thru on the pass side eng compartment and BDR uses BMW front struts. If it is BDR, the vin should be stamped on the crossmember the exp tank is mounted to.
Also, I see the pass door latch is the original type British latch assy. BDR uses a crappy latch from something non-automotive.
Could be very early BDR before changes That may have been made to cheaper parts to lower price.
If not BDR, I'll say Shell Valley ? B&B.