This the Smallcar mount, to put a Subaru engine into a vanagon:
It’s three piece and for a 914 you only use the two side pieces that bolt to either side of the engine. That front cross piece with the VW transmission cradle is discarded (or if you’re nice Smallcar will sell you just the side pieces) and that’s where it attaches to the stock 914 front engine cross bar. If you’re using the 901 transmission you can use the stock 914 transmission mounts, if you’re using a Subaru transmission then you’ll need to make your own. IMPORTANT: Stock Subaru turbo engines’ exhaust crosses from one side of the engine across the front to the other side, but this SmallCar mount is in the way. That means to use this mount with a turbo engine you’ll need to redesign the exhaust/turbo location and re-plumb everything. That's when a cradle makes a lot of sense.
This is a typical cradle, home made:
The front mounts where the stock 914 engine bar mounts, the rear where the stock 914 transmission mounts. You can see the cross bar with the stock Subaru motor mounts in place. Pretty simple, it's really just a sub-frame, and it’s open, making it easy to plumb the exhaust, etc.