69Catalina

Hello, I have a 1969 Catalina born with an automatic. My intention is to swap to a manual 4 speed. The trouble I'm running into is finding the clutch linkage and pedals. Any thoughts on where to find some, or if the clutch linkage and pedals are the same from the gto/firebird. I have found several reporduction parts for these but not sure if they would fit or not. Thanks again