A newbie to shell scripting.....

I need some assistance in doing the following:

I have a system generated text file(a makefile basically).

Before I can execute the make command, I need to modify one section of this generated file.

The generated section is as follows:

# INCLUDE macro for SCI
#~~~~~~~~~~~~~~~~~~~~~~~
XYZ_MAIN_INCLUDE = \
-I/Path_1 \
-I/Path_2 \
-I/Path_3 \
-I/Path_4

Basically, Path_4 has be placed at the start of the INCLUDE section with appropriate changes to new line delimiters.

This modified section should look as follows:

# INCLUDE macro for SCI
#~~~~~~~~~~~~~~~~~~~~~~~
XYZ_MAIN_INCLUDE = \
-I/Path_4 \
-I/Path_1 \
-I/Path_2 \
-I/Path_3

I have to make similar changes to 6 different files in 6 different locations in the directory structure before I can execute make.

Can I achieve this using a shell script without having to modify all the files manually everytime I need to execute a make?

Thanks in advance for any suggestions.