My old man is sticking a big block in his 69 camaro. He has nos 67 big block mounts,frame and rubber parts. Will these mounts work in a 69? Not sure because parts catalogs list 67-68 bbc mounts and 69bbc mounts seperate. If they are not interchangeable can someone explain the reason. I read in a previous post that the big block mounts set the engine 1" towards the passenger side and there is 3/8" offset at the transmission. Is there a difference between bb and sb crossmembers? Will a small block crossmember work with bb mounts? Finally, will the existing clutch linkage work with the big block. The car has a 350 and super T10 in it now. He is keeping the T10 in it. Any help would be great.