Like it says I have 2 of these things but they differ from each other. I got one from a 78 Lincoln and its longer than the other one, doesnt have the ribs on the top, and the tranny mount is differnent. I dont know what car the other one is from but the mount is similar to a fox body mount and its shorter. The lincoln one has a bolt on each side that bolts to the sides of the tailshaft and then the rubber comes down and bolts to the crossmember, kinda like if the mount was a c and was cupping the tailshaft. Unlike how a standard mustang tranny mount is just a block that has bolts going straight up and down. Which should I use for my Fox body swap; the longer strange tranny mount non-ribbed one, or the shorter, ribbed conventional one. I'm going to measure them and see how long they are compared to a tremec/T5 and how far the engine mounts are from the tremec mount compared to the engine mount to the C6 mount. Or maybe someone knows what the hell Im talking about since I know several people on here have down 460/C6 swaps. Thanks