I can recommend waiuku car spares for svx parts. We have got lots of crap off them for a pretty decent price. I was ther today and they ahve about 3 svx's and 2 half svx's
Ask for weasel. No ****, thats his name

If you want performance, you can fit a 'sweet' power steering pump. We had one on out stockcar and it was identical to the original svx item