poly bushes

Powerflex.....................

Nope, at present there is zilch. I emailed David Power, the boss of Powerflex, and he said he was not remotely interested in getting a set developed, having never had any enquiries for an X40 car. Guess if there is sufficient demand, it may be possible to get something made, but for a one off of say 10-20 sets, it will be rediculously expensive. T4s have 19mm (front) and 16mm (rear) stabilisers as opposed to a non-T4 17mm and 13/15mm setup, depending on suspension specification. The factory fitted Lowered Sports Chassis option had an even larger rear anti-roll bar (19mm). Aftermarket upgrades of up to 22mm are available.

Thanks for the input, guess the bushes stay with oem. when I do finally get round to doing the suspension work, looks like a set of T4 roll bars and droplinks are going to be fitted.

This thread has got some useful info and demonstrates that it is possible to modify the existing mounts, using Powerflex components:

Stiffer Bush - ooer!