Carvin also has a lot of options that aren't necessarily listed on their website or in their catalog.
You can get the body made of swamp ash, alder, mahogany, koa (when they can get it, which is rarely these days), or walnut.
Necks are maple, mahogany, or koa. They'll also do 5-piece laminates of any of those.
You can choose from any of their headstocks (as well as an 80's pointy headstock if you call and ask), standard or reversed (or uncut so you can design your own). They'll also do headstock laminates in any of the woods I mentioned plus birdseye maple, flamed maple, quilted maple, and flamed koa.
Fretboards are maple, birdseye maple, ebony, or rosewood. Dot, block, or diamond inlays, in mother of pearl, abalone (or black plastic, for maple), or no inlays.
Any option you can get on a finished guitar, you can get on the kit. It's almost as fun to order it as it is to build it.
Here's mine, a close sibling of SCGoatMan's, but in swamp ash and with a Wilky.