These sills 850037 and 850038, as commercially available, are suitable for all TR2 (with short doors) to 3B. They are adequate in most applications but are folded rather than pressed and thus are rather flat with little if any 'shape' or curve. The price reflects this method of manufacture. 
 
RevingtonTR have original Stanpart samples, and suitable tooling to be able to make sills which more accurately resemble the originals which are quite curved from front to back. We can make these in both steel and aluminium although as they are hand made the cost is significant compared with the commercially available parts. Please enquire if this is something you could be interested in.