Is it possible to import :
1) Textures from Cod 2;
2) Some of the original prefab/models like the vehicles, bikes
3) Decals and signs.

I have heard you can go to caulk but that sort of defeats the purpose.

All information would be appreciated.

as far as my understanding u can import any of those textures (cod2 textures) by simply going into the cod2 iwi files and then using a iwi2dds converter. You can convert the cod2 iwi's to a dds file which then can be made into a cod4 custom texture through the compile tools. But that just seems like a lot of work, cause then u have to remember which textures u used and include them in the final iwd. This also applies to signs and decals. As for prefabs, well idk the how on it, but i doubt that it will work if you just move it from the cod2 folder into the cod4 folder lol....