Copying "Retro Expansion"

Hello.
First post here!

I wonder if it's possible to convert or copy the files from the Retro Expansion i bought on Steam, and copy them into the Race 07 Offline folder?

Is that possible?

/superb3rra

...works with cars ,not with track-hillclimb cas of patch in retro,and iff u apply it fully to offline without steam.exe it will make Race On-GTR Evo go nuts=ctd...so just copy the cars without hill and will work like a charm..tested...