I recreated it by paused pausing the "Los Santos GP Variations #1 - GTA Content Creator Races" video every few millisecs so I could place the checkpoints and props as identical as possible. All props blocking of lamp posts and side walks are incorporated in this PS3-version, only cosmetic props are missing. So you will still get the same racing lines and lap times, even with the reduced props limit.
Enjoy! Cheers, Espikks :-)
keywords: LSGP Inner Loop, Los Santos GP Inner Loop, Broughy1322, Rockstar verified, R* verified