A few years ago, I casually looked into getting a '73 280 SE 4.5. I'm pretty sure it was mechanical fuel injection. I'm used to hearing of Petronix as a maker of ignition components. Do they do fuel injection too?

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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.