The mounts are great as a race car a small amount of vibration is not a problem, the biggest increase in vibration came from fitting the vibratechnics gearbox mount.
I bought the mounts off here a few years ago in as new condition, I have seen a few for sale over the last few years but don't know where they came from originally.
I fitted the mounts after a std one let go on track and cost me a driveshaft and a pair of pants!
these mounts stop any chance of the engine lifting or dropping if the mount fails

The engine is using water and has an unfixable misfire when up to temp so it has to be water getting int a cylinder somehow hence the rebuild

thanks m8 will hope to be out later in the year once it's all back together

steve