Dear Abdul,
Welcome to the group.
1st of all, enjoy your new (?) purchase and make a little detour.
You've got plenty of time to retrofit newer window regulators. There's no need to do that 'now'.
Usually there are many more & important topics and things to be fixed first before starting the "freestyle event".
Anyway, just use the Search function with usual terms (window regulator, power windows, etc.). At least, it has been done before here.
Good luck!
Best,