I had a set of mount inserts put into my 96 hatch. You should have jackstands, basic 1/2" socket set (10-21mm) [3/8" drive might not be strong enough to remove some bolts, or you might be able to get away with the 3/8" if you have a 1/2" breaker bar], floor jack. an impact wrench/socket set will make things much easier of course.
i bought the inserts because i heard that it helps reduce wheel-hop, which should translate into better take-offs. My experience is that , yes , it helped reduce wheel-hop, but doesn't totally eliminate it; wheel-hop is still present when dropping the clutch at high rpm (5k +) [or maybe i just need to upgrade my suspension]. one side effect to consider: noticeablly (?) more buzzing/vibration from the engine. Make sure you have a very good cd deck with shock protection.
Overall, I am pleased with the inserts. I like the feel of the engine in my hands, take offs are better, and less hop means longer life for the halfshafts/axles.