91PA, please read this:
I disagree on modifying the stock mounts. The OEM mounts on the 92-99 are far more than sufficient in handling a S3 Supercharged motor. Many of us are way beyond factory hp and tq specs on OEM mounts, and are doing fine.
The only one I would suggest you MAY want to modify is if you get the 95-newer front lower trans mount with the shock, delete the shock and insert some harder polyurethane (energy suspension endlink bushings) in it'* place. But I don't even have that shock mount. Just rubber on the Zilla, and it does just fine, despite the torque at the bottom end.