Biscuit vs. Spool Motor Mounts
One member here put on a pretty good rant claiming that the old style mounts were better than spool mounts for torque. But I have no idea where you ACTUALLY get QUALITY pillow mounts, anymore.
When I had my car together, I converted to a spook K, and it was my impression that the mounts reduced header clearance, and I remember a fight trying to get to the drain plugs in the block.