Although I don't have any experience with mustang hoods from them, i'll provide what I can.
My buddy got a carbon fiber CSL trunk from them at wholesale price and we picked it up from their warehouse to save on shipping.
The finish was spectacular; definitely a solid piece. Its weight was way lighter than the stock trunk, definitely not just a pound or two lighter. It's almost dangerous to open it without it smacking the rear window as of how quickly it can come up with the slightest effort. The fitment was a solid 8/10. It's off center by about 1/2 cm on one side and that's it. It's not really noticeable unless someone actually pointed it out and took the time to inspect both sides.
I know that this had nothing to do with a mustang hood, but fwiw that's what quality is to be expected from them on a cf product.
Here is a close up of the trunk: (im assuming the hood won't be too much different)