The fenders will work. There is a small bracket at the bottom you may need but its not a necessity. You need the core support front nose to frame brackets lower valance upper brackets rubber mounts etc. plus the nose with head light buckets turn signals and grills there are several other brackets you will need. It would be easer to find a 70-73 front clip and get all the parts, firebird central does stock several of the brackets in used condition.