It is difficult to be opened by one person. Better get another person for support. Front bumper can be removed by unscrewing the bracket nuts (just behind the bumper) from underneath. Once the bumper has been removed, just unscrew the pair of screws located on top side of each headlamp. Remove the harness and pull out the whole headlamp with assembly.
I don't have the details of Karachi workshops. As far as engine overhaul is concerned, it can be done in around Rs.15-20K. Just go to an expert mechanic for the overhaul. As far as paint job is concerned, you can have it done by any expert painter/workshop. You will get approximately the same cost of paint I just mentioned in my previous post. I know a person having mobile workshop who can take care of any issue related to Daewoo and his contact number is 0321-3823886 (Muhammad Ali). He has been working in Daewoo company.
Regarding Cielo conversion, I haven't heard of any Cielo converted in Karachi :(.
Looking Nice (y)
What kind of CHIP? I haven't seen any chip for the illumination! In stead, it has circuit printed on a thin plastic sheet (not a PCB) and any of the connection/lining might have burnt out.