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[johnnydog]

As the title - anyone got a new (or old stock) unused genuine GM LH front wishbone (90576788) that they would be willing to sell or trade?
Checking my spare parts, I have two new genuine GM RH wishbones (90576789) packaged with GM labels, but ideally would like to make a pair, by buying a new LH (even two!) or swapping a new RH for a new LH.
I would like genuine GM to make a matched pair/s.
TIA.

[Doctor Gollum]

The ball joint is the only thing that makes it left or right.

[biggriffin]

Just rebush, new ball joints, and poly-bush, the ones you have on the car.

[johnnydog]

Whilst the point DG makes may be correct, the corrosion on the existing ones doesn't make BG's suggestion viable, so my original ask still stands...

[Doctor Gollum]

Whilst the point DG makes may be correct, the corrosion on the existing ones doesn't make BG's suggestion viable, so my original ask still stands...

New or corroded, people have been rebushing Omega wishbones for decades

If the ball joint has a knuckle on the rear face, then these are sided whilst those with no knuckles are reversible. Either way drill the rivets, and swap out/rotate the ball joint.

Both Genuine and aftermarket ball joints include the bolts for refitting them.

Also worth noting that the rrp for genuine wishbones is almost £300

[New POD]

Just rebush, new ball joints, and poly-bush, the ones you have on the car.

Where does one find the ball joints ? Or rather, which of these would you recommend?

https://www.ebay.co.uk/b/Car-Ball-Joints-for-Opel-Omega-B/33580/bn_7000401675 

[Doctor Gollum]

I've used Delphi to good effect... Mostly because my local factors stocks them for less than a tenner. Genuine aren't particularly expensive as I recall

[johnnydog]

Only taken 2 1/2 years - but I managed to find a genuine GM one in Germany at sensible money last week. So that's me sorted with a matched pair
You wouldn't have thought they were that hard to find without paying extortionate US prices......

[Doctor Gollum]

Good job you didn't need them 2.5 years ago then

[Migv6 le Frog Fan]

The original balljoints are more often than not in perfectly good condition and dont need to be replaced with something inferior.
I found this out after I had replaced mine as a matter of course while rebushing my wishbones. 
Genuine GM bushes for the rear of the wishbone and polybushes for the front. Tightens things up nicely.