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And BEWARE. I was screwing in the final one of eight bolts on the anti roll bar and it snapped. I am now left with 7 and a half bolts on the roll bar. The one that snapped is the front most on the drivers side attached to the wishbone.
How big of a job do I have on my hands to sort that out now?
Cheers!
Be super careful when you are drilling the snapped bolt out. It's really easy for the bit to wander, and drill the thread out on the wishbone instead. Then you will have no choice but to use a nut and bolt.
An possible alternative is a screw extractor. I tried this when this happened to me, but with no luck (and you definitely don't want to snap one of those, they are very hard steel, impossible to drill).
Copper grease on replacement is your friend. As are high tensile bolts...get them cheap on ebay.
When I replaced wishbone, I removed the ARB (at relevant side only) then the wishbone. I then shuffled the new wishbone into place in this order: back bolt at suspension subassembly, front nut/bolt, then balljoint pin. I can tell you with the ARB off, I had no problems getting the pin in, the wishbone moves up and down with relatively little effort and the hub has enough play to move fairly easily by hand.
The ARB takes a bit of sweating to get back into place though, this is the much more difficult part of the job.
As S and B pointed out, there is a lot of merit in leaving this in place, and using 2 men to fight the increased resistance it adds. I would be tempted to do it this way in the future...