Does 126 wheels fit 123?
I think it does but need ti know before I buy.

Short answer: Don't know, never tried.

Longer answer: Probably. I had R107 wheels on a W123 at one time. There is a wheel and tire section of this forum where you're more likely to find a definite answer.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.