so im getting ready to pick up a 97 with 100k on it, its real clean in and out, never owned a gen 3 before so i know the biggest issues is getting the cams welded. the owner now is a tow shop and he knows nothing of the cars history, anyway to tell if the theres any issues with the cams by noises or anything other then removing the valve covers? anything else to look out for, going tonite to look it over and test drive it