I use an old driveshaft cutdown & welded to a bracket. This one shown with a '64 Merc 500 rebuild on it (original Merc tool in this case) but you get the picture. Clearly a V6 probably wont sit in a vice!
the engine stand do work perfect for this little 6 banger sucker,compared to the 10,2 liter 980hp engine and my 3 girls what was on before.
all the holes on the base plate did align with 4 studs ,slightly out of center but fine to work on .