Not sure putting a 200tdi would be worth it!!
It would be a disco engine as a decent fender one is mega money and then pipes and stuff will need altering. To do a proper conversion costs a lot of money and price would have to feflect this.
Most but not all!!
A lot of people buy 90's and add bits to them very cheaply and only do half a job.
Always best to take some1 who knows there stuff before parting with your cash
For starts its NOT a 200tdi it's a 19J and yes they are slow and turbo does well not a lot.
And regarding pipes not 100% sure what your on about but can't you unkink the pipe?