If you could convert them to fbx models, sure. I already used 'shells' taken from OG maps... Alpine, Glaicer, Arid etc. I have been messing around with XCC and searching through some old assets. TGAs are compatible with UDK, but like I said, you'd have to convert the w3d's to fbx's. Message me on Discord if you still have it.
Bubbles#8066 or hop on the RenX /AGN discord which is linked below.