Try Jack@Turbo Repairs Blackpool 01253 407464 as long as yours is serviceable he can recon it for about £250 all in inc collection/delivery. He can make up any to your spec and can make a T2 hybrid ie with bigger compressor which I had and makes loads of difference. Good thing about the hybrid is that it fit a standard engine/pipes
http://www.turborepairs.com/parts.html