There is a kit for converting the headlite servos to late firebird motors.. I'm not sure how the 73 up hood fits the 68-72 fenders, I think theres a glitch there but I'm not sure what it is...If you go over to corvettefurum.com and into the C3 general section you can get all these answers in minutes..I have gotten many answers there myself on My C3,C4s, and my C5