a little info about his car from wikipedia
Quote:
MG Midget MkIII (1966-1974)
The engine now grew to 1275 cc using the development seen on the Mini Cooper S. Output was 65 hp (48 kW) at 6000 rpm and 72 ft·lbf (98 Nm) at 3000 rpm. However, this was a de-tuned version of the engine that was given to the Cooper S. The Midget retained the standard 12G940 cylinder head casting that was common to other BMC 1300 cars, whereas the Cooper S had a special head with an extra two bolts to fasten it to the cylinder block. The hood was now permanently attached to the car. There were minor changes to the body in 1969 with the sills painted black and a revised black grille. "Rostyle" wheels were standardised but wire spoked ones remained an option. The square shaped rear wheel arches became rounded in January 1972. Also in this year, a Triumph steering rack was fitted, giving a gearing that was somewhat lower than earlier Midgets. A second exhaust silencer was also added in 1972.
22,415 were made between 1966 and the 1969 face lift and a further 77,831 up to 1974.
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so the 4AGE is quite a kick in the pants over stock power, since those are crank figures not wheel figures. 80bhp is probably 30-40 more than what it would have made with the stock engine!