More power and detail changes inside and out highlight 2003 for the entry-level Porsches. Boxsters are 2-seat convertibles with a midmounted, horizontally opposed 6-cyl engine. The base Boxster has a 2.7 liter with 228 hp, a gain of 11 for '03. The Boxster S has a 3.2 liter with 258 hp, a gain of 8. Base models come with a 5-speed manual transmission, the S with a 6-speed; both offer an optional 5-speed automatic with manual-shift steering-wheel buttons. Antilock 4-wheel disc brakes are standard. A traction/antiskid system is optional. All Boxsters come with side airbags and a power soft top, which for '03 exchanges a plastic rear window for one of heated glass. A removable hardtop is optional. Both models for '03 get modified front air intakes, body-color vs. black side scoops, and "smoked" plastic turn-signal lenses. Climate controls are relocated and Boxster's first conventional dashboard glovebox is added. The base model has 16-inch wheels; it's available with the S's 17s; 18s are optional for both. The 17s and 18s are of a new, lighter-weight design.