|Sticking to principles that he knew worked Eric Broadley designed the Mk2 using many features from the successful Mk1. A complex 20 gauge multi-tube chassis frame located the engine to the right of the car's centre line whilst the driver's cockpit was offset to the left. To add to the rigidity of the design the undertray and propshaft tunnel were riveted to the chassis so acting as a stressed members. This configuration meant that the drive from the Ford 105E 997cc overhead-valve engine, which was canted 15° from the vertical as well as 2° longitudinally, could go from the the BMC 4-speed gearbox via the propshaft which was to the right of the driver's seat to the offset differential assembly. This allowed for a near-straight run for the transmission line which helped limit power losses.
Transmission was via a Borg and Beck 7.25" clutch to the BMC gearbox which was fitted with close ratio gears made for Lola by a name that would soon be synonymous with gearboxes, Mike Hewland, the ratios were 1, 1.23, 1.67 and 2.5:1. The differential was a BMC nose piece fitted to a Lola aluminium casing, internals were BMC with a choice of three crown wheel and pinion ratios 4.2, 4.55 and 4.9:1.
The front suspension consisted of wide based unequal length double wishbones with outboard coils and dampers, the rack and pinion steering attached to the uprights forward of the front-wheel line. At the rear once again Broadley used the driveshaft and a trailing link to work as a top wishbone while the lower wide-based wishbone was mounted at an angle to the axis of the car. To compensate for the unequal length driveshafts caused by the offset differential a hollow hub casting was made for the offside rear wheel with the right-hand driveshaft passing through it which kept the angular displacement of the two universal joints at an acceptable level. Drum brakes were fitted front and rear, the rears being mounted inboard on specially made backplates bolted to the sideplates of the differential, as on the Mk1 Alfin drums were used. The Lockheed two leading shoe design was operated by twin master cylinders.
A low and wide fibreglass body covered the chassis with the nose and top panel back to the cockpit being a single unit, inside the nose a large aluminium cross flow radiator was mounted to the front of the chassis. The two S.U. carbs emerged on the left of the car between two top frame tubes one of which stretched diagonally from the top left mounting point for the front damper to the right front corner of the cockpit. A six gallon (27 litres) fuel tank sat to the right of the driver with a oil tank for the dry-sumped engine was mounted above and to the right of the driver's legs. The wheels were 13" cast magnesium bolt-ons with the hubs being integral on the front and were fitted with Dunlop R5 racing tyres, 450X13 on the front and 525X13 on the rear.
All the Mk2s had the prefix BRJ for Bromley Junior as part of their chassis number.