So you are looking for a coffee table that turns heads? This Engine Block Coffee Table from BlockHead Designs is worth a look. It has a tempered glass cut with rounded corners and a GM 4.8/5.3L cast iron block with the pistons fixed onto it. The entire surface area is sandblasted.
This Engine Block Coffee Table measures 17″H x 3’W x 4’L. The bad news? Something like this doesn’t come cheap.