How strong is this engine?
2 or 4 bolt mains?
Forged crank?
Forged rods?
Forged pistons?
Max rpm?
Has anyone ever boosted it?
Transmission options?
Is the bell housing removable?
Anyone have the dimensions of one? length/width/height
Common failures?

The reason I'm asking is that I'm looking for a strong v6 for a project and I'm a Mazda fan.