In the early days our type of cars where called specials and kept the name of the chassis/engine manufacturer on the log book for tax purposes, as in the early 1960s a friend had a what looked like a XK120, the body was, but the chassis and engine where from a 1935 Fiat 1500cc limo, it also had a swichable Rootes blower fitted with a single SU carb which made it a match for even a true XK120, in those days you had to look at the tax disc to know what the car realy was. Those where the days of wolves in sheeps cloathing as it was the tax disc that revealed all.
Mike