yeah i understand its possibly not plug n play and agree it cant be hard, i was just hoping a couple of people might have done the same conversion already and be able to point out any possible pitfulls thay come across.
I've done this conversion a couple of weeks ago I've got a 92 200TDI which had crap headlights and I had a old 300TDI which was going to be scrapped so I thought easy just swap them over with the grill etc only take a hour how wrong can you be!!
The headlights and indicators on the 300 have different fixing points etc and different wiring connectors on the indicators and sidelights the way round I found was to cut the headlight mountings out of both vehicles and refit the 300 into the 200 and spot weld it in and used the fitting connections from the old 300 to wire the sidelights, indicators and fit the grill plus the trim in took about 6hrs to complete but well worth it.
how wrong can you be!! The headlights and indicators on the 300 have different fixing points etc and different wiring connectors on the indicators and sidelights the way round I found was to cut the headlight mountings out of both vehicles and refit the 300 into the 200 and spot weld it in and used the fitting connections from the old 300 to wire the sidelights, indicators and fit the grill plus the trim in took about 6hrs to complete but well worth it.
I've done this conversion a couple of weeks ago I've got a 92 200TDI which had crap headlights and I had a old 300TDI which was going to be scrapped so I thought easy just swap them over with the grill etc only take a hour
The headlights and indicators on the 300 have different fixing points etc and different wiring connectors on the indicators and sidelights the way round I found was to cut the headlight mountings out of both vehicles and refit the 300 into the 200 and spot weld it in and used the fitting connections from the old 300 to wire the sidelights, indicators and fit the grill plus the trim in took about 6hrs to complete but well worth it.
thats just what i was after,
i didnt want to have to take the front end off my disco just to find out i need more bits to do the conversion, cheers for the information 
