I'm replacing the worn front anti-roll bar bushes on my 2003 3.0i (M-sport suspension) and read conflicting information regarding the correct size bushes, are they 24mm or 25mm?
Im sure I'll be corrected if Im wrong, or someone knows the exact answer, but you could try putting an open ended spanner over the ARB to try and get a better idea of the size?
I replaced my OEM bushes with powerflex ones. The originals were knackered.