depends if your willing to pick it up but there is a scrappy in Peterborough that had a mk3 8v gti just under 75,000 miles.
I was going to have the engine myself but haven't got the money, they wanted £80 for it, car was driven in and scrapped because of rust so engine is good.
If your interested I can get their number if you want to give them a ring and see if they still have it?