What timing would be best??

I'm about to go to the track with my Duster again and I think it needs a little more tuning in the timing area. My motor is by no means a crazy or hot motor, I'd like to know what kind of initial and advanced timing might work best for me?? Also any advice on MSD springs and counterweights would be great. Here's a quick run down of what I've got.
360 +.03, stock bottom end, .430/.450 cam, LD340 with a proform/holley 750dp, as cast X heads, adj rockers, MSD 6AL box and MSD dist. with no vacuum advance on it. the car also has headers, 3" and is an auto. I can give any other info needed. Thanks much, I've got a camaro and a subaru to run down.