292 Information

[old51sedan]

Have access to a 292 to replace my 250 in my 1969 C-10. I know that the left side frame/motor mount will work. My question is about the right one. This 292 has the motor mount ( bolted to engine) and what is left of the frame mount. It was torched in half to remove from truck. He tells me it's the motor mount which is different, while I believe it's frame mount that I need to replace. Hope fully he's right, but I need to know. Also the exhaust manifold has three bolts for the exhaust pipe where the 250 only has two. Does this mean that the 292 has a larger diameter exhaust? I was thinking of using both the intake and exhaust manifolds from the 250 on the 292, but don't want to comprise the engine if it needs the larger size exhaust pipe. Anything else I need to know before I start this instillation would be helpful.