A buddy of mine a couple of years back was in thie same situation, limited money, space, etc. Anyway, he picked up some scrap/warped/discounted
2X6 lumber at the local Lowes and built an engine stand/holder similar to the shipping platform of a crate enigne. He made the vertical risers the width of the oil pan rails. He then used 2 old seatbelts from an old car, one end attached to one riser, then the other end to the opposing riser. Drape said belts over the engine, buckle up, tighten the slack and your enigne is now nice and cozy and secure, works great for hauling too. I now have the "stand" and have used it alot. Anyway, good luck.