Healey Chassis Details All the Healey Cars were built on one basic chassis, which underwent a steady program of improvements. The first cars were on the A type Chassis (using numbers A1234 etc) and production ended with the N type. Type Approx Dates Number Built Models built on this version Brakes Shock Absorbers Axle Other Changes A 1946 - mid1947 92 Duncan Elliott Westland Lockheed Lever Arm Torque Tube   B mid 1947 - late 1949 230 Duncan Elliott Sportsmobile Westland Lockheed Lever Arm Torque Tube Battery position moved to under rear seats C 1949 - mid 1951 178 Abbott Tickford Lockheed Lever Arm Torque Tube   BT mid 1951 - late 1951 50 Abbott Tickford Lockheed Lever Arm Torque Tube   D late 1949 - mid 1950 51 Silverstone Lockheed Lever Arm Torque Tube Engine moved back 6" E mid 1950 - 195? 54 Silverstone Lockheed Lever Arm Torque Tube Wider body, more legroom, larger screen F late1951 - 1954 100 Abbott Tickford Girling Telescopic Salisbury   G 1951 - 1952 28 Alvis Girling Telescopic Salisbury   N 1951 - 1954 total 504 102" wheelbase 150 108" wheelbase 150 Nash Bendix Telescopic Nash   VARIATIONS Tickford and Abbott have a longer chassis, created by extensions bolted to the rear of the standard chassis.