Larry is correct, and those photos show the RHD driver's footbox very well. Intrigued by the added legend 'positive ground', I looked a little closer and noted that the battery of this car is on the driver's side. Odd, because as far as I am aware all RHD cars had the battery over on the other side, to allow some kind of access to the master cylinders and reservoirs and to help with weight distribution when the car is 'one up'.
I've attached a photo of the inside of the R footwell. This shows the size of the 'step', which acts as a sort of clutch foot rest - I say 'sort of' because it's way too close to the driver to be properly comfortable. Its position is dictated by the rear end of the R side exhaust manifold.
The ribbed aluminium plate is not factory, and neither is the carpet edge trimming. Otherwise 6029 is a very original car, not restored and with a terrible late 70's blow-over respray, and is all the better for it. It's the car in the Haynes Museum, Somerset, England - where the Haynes manuals come from.