Freelander 1 Buying a used Turbo, how do I know which one?

Hi fellow FL1 owners.
I'm considering buying a used Turbo, with the plan to recondition it myself. The question arises, how do I know which one I need?
Is there a part number to be found, or is it simply to do with the year, model, HP, etc?
Any advice is appreciated.
Oh, are the 109 & 112HP turbos the same? Are they compatible? Or do they differ in any way?
Thanks.

All FL1 TD4 turbos are the same, as far as I know. The only difference between the different power engine is the injectors.

Thanks for that info. It was what I was hoping for.
I'm now looking for a 2nd hand turbo to refurbish, adding it to my extensive spares portfolio. Just in case.

Consider buying a donor car, it pays dividends and you can flog what you don't need!!