Complex sentence: Inside, the GTP was essentially the same as the Turbo, but the exterior used mini-quad headlamps (along with all other Grand Prix coupes), "GTP Grand Prix" and "24 Valve V6" badges.
Split into simpler sentences: Inside, the GTP was essentially the same as the Turbo. The exterior used mini-quad headlamps (along with all other Grand Prix coupes), "GTP Grand Prix" and "24 Valve V6" badges.