Man, no love for the big block yet. I have an MSD 6 with my timing locked out, the car used to be setup for the strip. I wanted to unlock it and make it a little more streetable, which is why I was interested in the timing control portion of this. I didn't really want to spend $350 on a new distributor, of if I know it'll work, maybe it's worth it. I think I'll run it in fuel only for a while to make sure I'm happy with it, then grab the pro billet.
Any word on when you'll be getting more of the 600 ones in stock, I think it has been 2 weeks since I ordered it.