THANKS, unfortunately I am now MORE confussed. thankfully the last frame table puts it all in perspestive. Given I have not driven and car is still in rebuild, I 'll use the BFG for testing and hopefully go for a speed rated tire if car holds up.
(Or I find a complet set of original 7&8 rims as spares)
hope to be looking for speed rated tires soon (end of year)