motor mount inserts

Has anybody tried those motor mount inserts for a gsr? Do they work well do they make any difference.???

Hey man I just ordered some Energy Suspension motor mounts for my LS. I got a lot of engine twist and wheel hop on my launches and this will supposedly help minimize that. Although with 17" 45s I'm really band aiding the problem instead of breaking down and getting 15" rims... I'm too vain though :D I'll let you know the difference that I feel once I get em in this week or next.
Matt