All speculation on my part. I have no experience using the aluminum mounts for DD/street use and don't know anyone who has. Will be interested to follow your experience with them over the long term. Please post updates from time to time. Thanks.
for our circle track G bodies we had to use rubber body mounts, no metal permitted, so we stuck with the rules and used hockey pucks like most other teams have been using for years . They never broke in all the crashes the car was involved in.....