In May of 1961 BMC upgraded their flagship model with three SU HS4 carburetors, modified valve springs and a new camshaft. Called the MKII, it was an alternative to the Jaguar E-Type.
The MKII was initially offered as an occasional 4-seat roadster called the BT7 or the 2-seat variant from known as the BN7. Both versions used flat front windscreens and detachable side curtainsin the style of a roadster.
The rear panel of the BT7 was cut out much deeper towards the truck to make room of the small jumper seats in the rear. As a result, almost all the road race and rally cars were built on the BN7 platform.
Later cars came equipped with a center-located top-loader transmission and a fiberglass transmission tunnel. Of these the BN7, top-loader is an especially rare and desirable combination.
Like the earlier 3000s, the MKII featured BMC’s C-Series six-cylinder engine with a 4-speed + overdrive gearbox. It used a separate ladder-type frame and a steel body.
Production of the MKII BN7 was very limited to only 355 cars. Only 125 of the center shift BN7 were produced
The BT7 4-seat roadster vastlymore common at 5,096 units.
MKII configuration was Americanized in late1962 with the introduction of the BJ7 Convertible. It replaced both models with a collapsible soft top, wind-up windows and curvedfront window.