It looks like someone bought a kit to put the 460/C6 in this 1960 F100, but what transmission mount is this? The rubber is missing on the left side c6 by farmgate, on Flickr
What you have is a Lincoln extension housing. The Lincoln mounts were 2 separate mounts, left and right. Later model ones had a cross bar between the mounts. I looks like someone made one of the Lincoln mounts to a regular Ford passenger car type trans mount. Bill
I just wrecked out a 74 MK IV Lincoln continental that had that same exact mount. Shouldn't be hard to get.