1981 Buick Century Limited, proportioning valve

Hello,

I'm looking for a proportioning valve for a 1981 Buick Century Limited. V-shaped engine configuration, 4-door sedan hardtop 4.4L Engine ( VIN: 1G4AL69J6BG178172)
please see the photos of the current old valve here https://we.tl/t-gbiVPTUaM3
Could you please let me know if you've got it and if so, could you please let me know the price including shipping it to the United Kingdom?

I'm also looking for a service manual for this car

Thank You in advance,

Best,

Tim

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