Its going to be here on Wednesday so i would like some advice before i put it on.
My combo:

DSS 306
9.5 compression
victor jr. intake
fully polished non-emission AFR 185's
1 5/8 long tubes.
Mac 2 1/2 full exhaust
Z-303 camshaft
1.6 roller rockers
3:55 gears at the moment. Might swap rearends to make it 4:30s
T-5 tranny

The car pulls 10 lbs of vacuum at idle
Around 37 degrees timing full advanced

I have read in several post that:
"that going from a 70/78 (out of the box jets) to 76/83 responds extremely well on the 650 Demons."
With 10 lbs of vacuum what power valve would be correct?
I have read subtract 2 from your idle vacuum and i have read divide by two for the correct power valve.

All advice welcome!!!!!!