Glad to hear about the massive difference. I do know I was able to replace the mount itself, seperate from the outer housing. Appears that there is NO difference btween 4cyl and 6cyl, just as you point out. Here is what BAT has to say, a source I trust: SVT torque mounts are the logical upgrade for 95-97manual transmission cars. These uprated mounts reduce
engine movement and associated problems. H.D. urethane mount inserts are specially designed to fill the "air gap" spaces around standard rubber motor mounts making them considerably more firm. Limiting excessive engine movement also helps to reduce torque steer. Great for both straight line acceleration and carving up the Auto-X course. Note H.D. mount inserts fit 1998 > manual transmission cars only. Earlier cars (95-97) require SVT torque mounts prior to fitting H.D. engine mount insert.
So, this leads me to believe the '95~'97 mounts are diff than later mounts. Appears the '98~'00 mounts fit (SVT preferred). Your experience/thoughts support this notion?