Whats involved in retro fitting 4 wheel TC

Hi guys,

My 98MY Dse is starting to exhibit signs of brake modulator problems (click in pedal) in conjunction with accumulator problems so a big overhaul is imminent.

I also happen to have a 99MY donor vehicle sitting outside the door. I'm assuming that most of the bits including ECU's etc are transferrable.

So I'm just thinking why not try and upgrade my 98 to 4 wheel TC while I have it ripped apart.

Has anyone tried it or know what would be involved?

I asked this on rangerovers.net a while ago but didn't get any replies as it seemed a worthwhile upgrade even without the permanent modulator fix.

There are some wiring differences from what I can gather, but I'm not sure what other issues there might be...

Guy

ECU is totally different as is the loom,I wouldnt bother as the earlier system is more reliable.(ECU wise anyway.)

whats a modulator, does my 1990 classic have one?