Daewoo = GM Opel/Vauxhall transplants = Korean
Opel/Vauxhall
To say Daewoo bad is like saying Opel/Vauxhall bad.
The old Lanos uses the old Astra G's platform. It has the same sort
of handling as the Astra which explains why they are popular in the
US.
The engine block is the same as the Astra. The block is the GM Opel
Family I. The intake, exhaust and management are different across
GM Europe, GMDAT and GM Saturn.
Same engne all the way.
Daewoo or not Daewoo, the quality of cars produced is improving
under GM's managment is more important.As for the disguise thingy
you keep mentioning,it is all part of the rebranding game. Eg.
Organics shampoo now is renamed as Sunsilk,Darkie toothpaste
renamed as Darlie, etc.
the local chevys are using the Family 1 engines.
http://en.wikipedia.org/wiki/GM_Family_1_engine#E-TEC_II
Go thru the above link and search the answer for your question.