Range Rover Classic speedo cable??

Hi Folks,

I'm in need of some help!

I've got a 1992 Range Rover Classic that was previously fitted with a 3.9 efi V8 and 4 speed auto gearbox.

I've now fitted a 200 Tdi engine and 5 speed manual LT77 gearbox from a 1992 discovery.

What speedo cable/parts will i need to use as my Range Rover has the electronic speedometer instead of the discoverys speedo cable that fits into the back of the speedo clocks on the dash.

What set up does the 200 Tdi 5 speed manual Range Rovers use?

Thanks