Those are OK quality, not professional grades by any means, but adequate for hobby use. I'd suggest extending the length of the legs on the engine stand by about 6" or so if you have access to a welder for maximum stability with a stovebolt six mounted on the stand. Just add a 6" long piece of square tubing to the end that plugs into the upright part of the stand. I've seen one incident where an engine stand tipped over forward and injured a student's foot pretty severely- - - -nearly 100 stitches to close up the cuts, plus several broken bones. The kids had removed a fully assembled engine from the stand, attached the bellhousing and flywheel, and put it back on the stand. Dumb move, but they didn't stop to think about the extra leverage.
Jerry
