I personally wouldn't want an FE or two sitting around waiting to be adopted. That's a good chunk of change sitting in inventory and inevitably someone would want a different camshaft, wrong color, etc, etc. The majority of my engines get custom pistons, coated bearings, custom roller camshafts, etc. Stuff ain't cheap. In addition to all of that, there aren't enough parts available right now to fulfill orders, much less have something sitting in the background.