BrawlBox is a tool that was designed to edit the PAC and PCS files from Super Smash Bros. Brawl. It's useful for adding more materials and shaders to a model, and for removing the Harry Potter Effect from a Custom Track that suffers this problem. It can edit most, if not all formats that have been seen inside a BRRES file.
The most recent version, v0.66b, allows editing of many model and texture animations that were not available before. This includes versions from Mario Kart Wii.
If you want to know, how to edit brres in BrawlBox, watch here: BrawlBox Tricks
Known Problems with Mario Kart Files
- It cannot edit *.SZS files (but it CAN decompress them).