Help Please!! Rear Trailing Arm Bushes?

[SimonMitch]

Hi All,
I've been through all the bush sections and found the various bit relating to Superflex etc and the bit that says order the Z31 rear trailing arm bushes but burn them out and leave the collar in but when I contacted Superflex to order the rest of the list and asked about the rear arm bushes, they said they don't do them? Any idas where I can get these from?
Thanks again
Cheers
Simon