I e worked on both types of motor mounts. While the biscuit is easier to work with, the spool isn’t hard ether. It just has a narrower window of drop in. The bolt that secures the fail safe mount is a little harder to install than a nut from under the car to the biscuit. But not much harder.
Honestly It’s splitting hairs on the install. The biscuit wins by a hair. However with that said, I myself would use the fail safe and not worry about it ever. I’ve ripped the biscuit mounts in half before with my small block 4spd Cuda really easy. The fan does indeed eat a shroud for lunch...
