x2 - tons of people fab stuff up.
This forum has a smaller sampling of what people do for each respective vehicle brand.
I'm into Landcruisers, so I frequently visit ih8mud.com which has much more Landcruiser mods. There are many other sites for the different models.
There are also sites like pirate4x4 which is a wild west of 4x4 fab. Don't expect to be pampered there and you will get an earful if you act like a newb. But they also have lots of people doing hard core builds.