Note also that John selected the Halibrands for his MK I as would be correct for the pre-Gulf cars. The BRMs didn't get used until the Mirage series.
I certainly like the look and will do the same for my MK I.
besides that, they do have a better offset to fill the front wheelwells better than most of the BRMS one can see on the SPF MK1´s.
Or is this only an optical illusion?