I'm pretty sure you can download it off of the gamesaves section of this website. I'm sure it has one.
What do you need? I don't think you can change a game save for Forza 4 it gives an error I am almost sure.
Their is an editor that you can mod xp and level as well as affinity for car manufacturers. I have it on my computer.
"There" may be one. But are you refering to Forza on xbox or computer, Renowned? Also, If you are getting errors try using Horizon instead of modio to extract. And make sure you only have to mod the game save. On some games, you have to extract save data from the gamesave itself to mod it. You can do this using Horizon.
What I know, you can't just useGAMESAVE of other players, because it will give you error. -.- BTW: smoko400 can edit Your gamesave. ^_^