Restoration Tips for My Classic Rolls-Royce Corniche

I'm seeking advice on restoring my classic Rolls-Royce Corniche, a 1977 model with approximately 60k miles. While it's been maintained well, I'd like to bring back its original luster and functionality. Specific areas of concern include reupholstering the interior, refinishing the exterior chrome trim, and recalibrating the engine for optimal performance.