I am assuming that the Olds 260, 307 and 350 Fan Shrouds are the same and that no version of a small block Chevy will fit. Am I correct? I put an OLDSMOBILE 350 in my El Camino so I cannot use the Small block fan shroud, or the Buick V6 one. Could someone please verify this before I spend $100 on the wrong part again? I could grow to hate G Bodies very easily and it is justified!