Works performance kits

It used to be common for car makers to offer performance upgrade kits. We found that Ford would tickle an Anglia up 7.5bhp for £13 (£283 now); Triumph would raise a Herald 17.5bhp for £32; DKW would tune up a Junior for rallying for £39; Sunbeam would add 14bhp to an Alpine for £20; and Austin and MG offered a plethora of options for the Sprite, Midget and A.