could have seen on another thread but the charger rubbed on the bonnet sound deadening. instead of just taking the stuff off i decided it would be better to lower the engine a little. small benefits like lower centre of gravity could be taken from that but in the real world i dont think happened.
after looking at the mounts i see its quite easy to lower the engine as the v6 hangs from its mounts, so i made some spacers to go between them and bought some longer bolts.
worked well, no more rubbing.
Drew