i got a 99 gtp i just bought this car and i love it, bu it started knocking. it doesn do it right away then gets warm and does it, but sometimes if i shut itt off and go into a store or something when i turn it back on it doesnt knock for a lil bit. sounds like its coming from the engine. i took off the supercharger belt and it still made that noise. i am so confused and pissed that my engine might be screwed after i only put 500 miles on it. it doesnt seem to have any lag in performance. this car moves no stuttering when i get on it it runs awesome just that knocking. any ideals??? its completly stock. just changed the oil, didnt help.