I have a twin turbo system for the 124 series m103 motor ,this is the british kit that has been discussed on this site.It is complete with exhaust and used only 3000 mile at the most.I used an older car as a test bed with intentions of putting on my nice 300e but I dont realy need that kind of HP ,the thing is brutal.
Also as life would have it I'm moving to london area and will be damned if I,m going to pay shipping again.