Ahhh, it might be easier to just get a Mk1 Ph1 ecu? Thats what I did on my valver when it had the Ph2 ecu on as it annoyed the hell outta me, might be cheaper?
D-type will be a D7F in a mk1 hence 1.2 8v, was only fitted to the Ph3 so I doubt other ecus will work.
You tried ringing rstuning?