930 g50 pedal box conundrum

[R500_WKD]

Hoping to get some advice from the members on Pelican.

I have a left hand drive 1987 930 shell that we have backdated and put a 3.6 Varioram and G50 'box into. Most things going to plan but have got stuck on the pedal box. I don't have one and need to track down something that fits.

My understanding is that I need a 1987 to 1989 LHD pedal box from an SC or a 1989 930 which all had the G50 'box and hydraulic clutch. I'm having trouble tracking one down over on this side of the pond (UK) and wanted to know if the 964 or 993 pedal boxes, which both use the same G50 'box, will fit/work?

Thanks for your help, NigelM