I have a full d16 and a full d15 then i have a d16A1 DOHC. I want to clean them up. I really like the way sand blasting looks. I have a friend who has an enclosed sandblaster, but im at a complete loss about what sand to loose. Ive also never sandblasted before, and google is cluttered with to much b.s. making it hard for me to find a good "how to" for alluminum heads/blocks and exactly what i need to cover and what to cover it with. Sorry if this is in the wrong forum, but i didnt know where else to put it.