wow, they look sweet! i may have to do the same to my DD stuff
i have a lucite top z-chip atm, but i am going to modify it soon, and i think alu will be my material of choice. the blue anodising on my Maze4-GPU got scratched when it *FELL OFF!* my gfx card, i have since emailed DD about a possibled alternative method to mounting that particular block, especially on the nVidia GFFX cards with the 4 holes around the GPU. so when i get round to remounting it with my revised method i will strip and polish it.
again, they look really awesome. major props