This dlcpack allows you to place any vehicle, weapon, ped or pedprop replacer inside, and it will overwrite all other instances of that model.

This makes it more convenient to replace these items, rather than having to find and/or navigate to the correct patchdays and DLC updates for each model, or using a random later patchday which may not have all the model types you need.
It also allows you to be more organised, as you can keep your model replacements separate and in one place, without having to embed them within all the other vanilla files and folders.

This dlcpack is structured in the same way as the vanilla ones are (but only contains relevant paths), so place each type of model in the locations you would normally.

Installation instructions are contained within the download.

----UPDATE 1.1----
-The structure of the dlcpack is now even more convenient! The .rpfs for each type of replacer is located in the same folder, which is quick and easy to get to, and each one is named clearly/unambiguously.
-A .rpf for animation replacers has been added.