This hack allows you to change the classic Wolverine costume to a new suit - the Wolverine costume from the "Astonishing X-Men" comics.  
There are also two patches, which can built into this ROM hack: 
1. Wolverine Easy Version: https://www.romhacking.net/hacks/890/ ; 
2. Good Claws Wolverine: https://www.romhacking.net/hacks/3138/ .