Looking for track editing files.

I had to format last week and lost a lot of track editing files, one type of file I cannot find online are the cubes needed to create the starting grid and pitlane etc, these cubes are called
AC_START_0
AC_START_1
AC_PIT_0
AC_PIT_1
AC_HOTLAP_START_0
AC_TIME_0_L
AC_TIME_0_R
AC_TIME_1_L
AC_TIME_1_R
I downloaded them last year but can't find where I got them from, can you help please?