Just an update on my bushes, i got the noltec ones refunded and the new ones arrived today, "nolathane evolution" part#49154 can be found at http://www.redranger.com.au/proc_selection.php
I am only replacing the 2 front bushes (silicon filled) for now, due to guys at work saying u need some play, and due to only the r/f being split which leaked all the silicon out so when i boost it sags down and heads left.
Removal of the bushes was fairly straight forward, support the subframe, found a socket big enough and the all mighty sledge hammer, wack wack, came out.
If using these bushes u need 2 reuse the orignal outer shell, so try not to damage it to much.
Once removed it was of to the gas cutter, just burnt out all the rubber and silicon until all was gone and until the centre feel out, on the outter part there is another 2 sleeves inside the outter one which you need, i simply grinded the end (bottom end of which u smacked out) so its flush then the sleeves simply punched out, leaving u with the outter shell, just grind and file to clean up the edges then i refited this to the subframe, just by applying a flat solid object accross the top and wack, outter shell is now back in subframe, now just simply insert the "nolathane evolution" bushes.
I recomend these bushes if you are replacing them for a gts-t, my opinion, but the crush tube is slightly tighter which fits more solid onto the mount, and the fact u dont have to hack 12mm of the bush and crush tube like the noltec ones.
Am still yet to refit subframe to my car, but will post and update when i have of how it feels etc, I hope this helps