Well, I ran into a minor "speedbump" in the project tonight.
Swapping in the R200 isn't going to as straight forward as I had hoped. The doner S130 has an R200 mated to CV drive shafts, whilst the S30 has an R180 mated to uni's, So a bit of research needed to determine the best way forward on that front.
For now will stick with the R180 and see how it's ratio works with the manual box.
The fun of it all