the file titled data in the game directory tells me that it will merge the content not replace itDid you:
1. unpack version 0.983f to a new directory?
2. unpack the base mod version 10 to the same directory, overwriting files if prompted?
3. unpack the 10.2 mod patch to the same directory, overwriting files when prompted?
Because from your comment it's really not clear. What do you mean by "the data files merge together"?
just can any one upload the game modded and ready