Hello Mark and Ade,
There is a shed load of potential in this vehicle, no doubt.
I agree with you Mark, I think it should as a '71 vehicle have the headlights in the wings and the slimmer Series 3 rad, but I'm not sure when the last of the original vehicles with the old style front grill mounted headlights ceased in production, it's configuration maybe gen; I used to own 61FK22 which was one of the last 2A's off the production line and they were outboard on the wings and it had the later S3 slim rad.
Ade, you were on about Op Granby paintwork, it appears to be a Rover 1, 2A, if you want it to be as near as possible original, forget it my friend, it was never there being struck off in '77. Go for the period DBG, regrettably it has what I believe is the early 'B' Card which did not give the paint code (Clive?). The early S3's up to about were all DBG up to '77 if I remember rightly, so that speaks for yours.
Anyway, all the best, it's a cracking wagon whatever you decide and another one saved
Regards,
Bob