My MK-III 95 car failed its MOT on rear upper inner wishbone bushes. The inner edges of rear tyres were schreaded to canvas/wire.
Lexus wanted £300 per wishbone, 3 hours labour at £110 ph (each side) plus £90 for tracking. £1350 +vat and I'm sure they would have had me for a few other bits at the same time.
I installed replacement bushes "ADUS 578, 90-01 Lexus LS400 Rear upper control arm bushing" as purchased from LDP Autos on ebay.com. They set me back 70USD for parts, plus a mate in USA to onward ship, another 40 USD-ish and about 8 hours 1st side and 2-3 hours the second.
The Car rode a lot better afterwards, but it was not a job for the faint hearted. Had to make up a special tool for removal and fitting, a bit of maching for the inserts and it was time consuming. main bolts were 300 foot pounds I think.
If you really want to try it, I took a few pics at the time.
Would I do it again, yes, because it saved me tons of cash and I know how to do it now.
If Aberdeen was a bit closer to Hampshire, I would offer to do it for you.