From what I understand the rattling clutch is normal. Take it easy for the first 500 miles to break it in, after that it should be reduced if not gone all together.
Can't help you with the LT issue.
1999 Chrome Yellow GT
â€¢ Steeda Springs, Tokico Illuminas, Granatelli upper and lowers
â€¢ Magnaflow catted X-pipe/Magnapack catback
â€¢ 03 Cobra rims with custom center caps
â€¢ 80G MP3 Audio system, Clifford remote start...and a lot more.