TourerJ

I assume you have the old bolt, if so, measuring the diameter and length of the thread will give you the size. If the thread is twelve millimeters in diameter it is an M12 bolt and if one hundred and sixty one millimeters long it is an M12 × 161 bolt, I would Imagine. It's important that the bolt is made of the right material, probably high tensile steel. I am not a professional mechanic so as with all advice on the internet, check this out with a qualified person you trust .

This sounds like a typical water in hydraulic fluid problem, although I have no idea whether your vehicle has a cable or hydraulic clutch. If it is hydraulic, draining the fluid completely, drying out any water in the system as well, and replacing with clean fluid should solve your problem .

From what I have heard, the rubber bushes are welded to the anti roll bar and are rarely the problem. The source of other peoples woes in this area have been down to suspension arm, drop link, or engine mount bush play or in one case greasing pivots did the trick, apparently. Hope this helps .