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The Evo distinguishes itself through following details from the "normal" Alfa 75 Turbo
Limited series of only 500. All were built in the spring of 1987
Only delivered in red
Front-grill was not in grey, but in red
6x15" Rims instead of the 14" rims, coloured red
Stickers on the side with grey background and black text "75 Turbo Evoluzione"
Wings were widened, side panels, front-spoiler and bumper all made from super-light GFK (according to Alfa the Cd-value was down from 0,38 to 0,33. The Evoluzione was the first 75'er with the small rear-spoiler, which was later used in the serie version).
Seat design was slightly altered
Stiffer springs and even stiffer suspension units
Thicker rear-stabilizer (from 21mm up to 27,5mm)
Larger wheel-bearings front & rear
Redesigned "uprights" and front axle geometry
Exhaust-manifold with two-piece exhaust
Redesigned turbo
Strengthened main-bearings
Strengthened cylinder block
Strengthened cylinder head
Pistons which are 0,4 mm smaller, this then gives a cubic capacity of 1762 ccm. The standard from Alfa 75 Turbo is 1779 ccm. These measures were taken because the Evo was to drive in the group A (up to 3 Litre cubic capacity). For the classification of the turbo engines is the conversion factor 1,7. By 1762 ccm this would give us 2995,4 ccm. With the series bore this would have given the Evo 24 ccm more than legally allowed.
