The track is the one used from 1963 to 1966.Is a fast track with 2 hard hairpin.
Working on the GTK of Fat Rich i have changed all the wall and some height.
Thanks to ginetto not only for all the suggestion but also for some mip and corrections on the 3do files that have improved the work.
Into the folder Track there is a track.ini that seem to work with 65mod and also with 60fps new mod in addition to a readme.txt and the jpg for GEM.

Get v.2 version HERE
Delete previous version if you have it installed
Attached Files