There is a place in Stoke that will do you one for £300 exchange on a re-con unit.

Other than that it is take your chance on eBay, looking at £100 - £250 second hand.

I think it is a GT1749, but a different one to the 2.0 one, so check when buying. Your turbo will have a 9 digit number on it probably starting with a 3xx xxx xxx.

I might be wrong as I only know for sure for the 2.0 but I've looked at a lot of turbos for sale and noticed the GT1749 goes on the 1.9 as well as the 2.0