F20 gearbox/parts wanted

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Hi Hope everyone is well!

I am looking for a 5-speed gearbox for my (currently 4-speed) F20 4x4 (1982), as well as some other hard to find parts.

If anyone has the following, please let me know:

1. a nice 5-speed g/box;
2. a nice carb;
3. LH side spare tyre swivel carrier (want to cover to a jerry can holder on left side of jeep)

Cheers

Cliffy