As far as instructions on how to smooth and paint the dash, I'm fairly certain that there is a thread on it at fullsizechevy.com although I can't locate it at the moment, so take a peek on overthere if you aren't to busy. I hope to begin the long process once school is out and I am able to focus 90% of my attention to it. From what I've read, you need to completely remove the dash, then do a quick sand with 80 grit, then 120 grit, then 400 grit followed by paint and several layers of clear coat, but don't take my word for it. It's been a while since I looked much into due to a busy schedule (if I'm not at school I'm at work trying to get money together for wheels) so your best bet is just to do a search at fullsizechevy. Sorry I can't be of much help! All I recall is that it is quite the task to complete that requires a lot of patience
take care,
Jordan