If you like the wooden interior, your best bet is probably a 2.0, the 1.8 would have had to have the Lusso pack to get the wood, the 2.0 had it has standard.
Side skirts were part of the Sport Pack, which had Carbon Dash, Black Dials, 16" Wheels, and Sports Suspension. SP1, had Blitz Cloth Sprts seats, SP2 Recaro's, SP3 Momo Leather.
If you want the wood, look out for a 2.0 Base model, this had the Wood, Climate, Velour seats, 15" wheels and no side skirts. They are generaly thought of as less desirable than the Lusso (Leather Seats), or the Sport Packs, so should be cheaper.
Good hunting, and keep us posted.