What's your favourite mod?

Both of those items rank up there for me too! In particular, seeing the history of Ripley's light mods makes it noteworthy to me.

While I know this controversial amongst some members here, I like defaced engine mods. Ucwepn and Super have both done some great examples that can be seen on their YouTube channels. I've definitely been inspired to add "real world" versions of the P3 Pacific and Black Five Ten-wheeler to my collection.