x2. I built mine a little bigger (wider base) so I can be a little more comfortable about revving the engine.:devil: It's also completely bolt together so I can take it apart to put it out of the way when it's not in use.If you are talking about the later X (Nova) or F (Camaro F-bird) subframe, those babies are super heavy and not very hand rollable. Not to mention you still have the same problem with oil pan access and removal.
Several people on this site have built run-in stands fairly easily. Some are more elaborate than others.
I use mine on every engine and it was well worth the time to build. I use front mounts and built enough clearance to drop the pan without moving the engine. It's no bigger than an engine crate so it easily fits in a corner.