You could make a custom laptop. But, you'd just have to know where to get the hardware, and then know how to hook it all up, and like someone already pointed out that will be too much time, enegy, and money to have it be worthwhile.
crap, i dont want to make custom laptops because i want specific parts in em. i want to because it will be cheaper. just like how u can make a alienware computer non aleinware for waaaaay less then there prices.