i just picked up a 75 5T440T for $75. first off, what were these engines used in? second, it is destined to go into my 72 D200. it had center dump exhaust manifolds on it, and they were both identical. would this have come out of say, a D/W300 or something bigger? how would i be able to tell if the motor mount brackets are correct for my 72? im going from a 318 to the 440, are the trucks like the cars in that the k-member is different for big/small blocks? or did they use the same one in all the trucks? i will post pics of the brackets and manifolds if need be. thanks!!