http://7faq.com/owbase/ow.asp?History_of_the_Seven#h9
As the 70s moved into the 80s other changes came about. In 1982 the "Long Cockpit" was introduced. The interior dimensions of the Seven had been based loosely on Colin Chapman's 5'6" frame. By the 1980s the average male had become taller than his 1950s' counterpart and Caterham reasoned they were losing potential sales to taller customers. T
en gros il y a une difference de 63mmThe bigger cockpit was achieved by moving the rear bulkhead back by 2½". Moveable seats were also introduced for the first time.