The Darrian T90 was developed by Tim Duffee with assistance from Darrian owner Robin Herd (ex-March). It featured a raised rear wing intended to make the car more stable when "yumping".
Approximate Dimensions
1660 mm : Maximum width across front wheel arches
1810 mm : Maximum width across rear wheel arches
1550 mm : Rear track
1450 mm : Front track
2370 mm : Wheelbase
3840 mm : Overall length
960 mm : Height of roof above the floor plane
920 mm : Height of the leading edge of the rear aerofoil above
the floor plane

Exploded diagram of Darrian T90