Half-Life: Source Enhanced is an HD replacement pack for the default Half-Life: Source content. This includes models, materials, and map textures. Not to mention the other content that is also released in this mod.
I've been telling you guys about these for a while and I never got around to releasing them. I'm not adding them to the SVN yet because I still need to round up some other models I'm going to include but I figured I'd add it to ModDB and gmod.org since you guys have waited so long. As said in the title this is for garry's mod not Half-Life: Source. To install it simply copy the folder inside the ZIP file into your garry's mod addons folder.