Two things- first unless I missed something nobody mentioned welding up the slots in a stock distributor plate to limit the advance. Second- here is the timing chart for my sniper/hyperspark 512 timing. If you’re not used to kpa instead of inches of vacum look it up it’s an easy conversion. My motor is super happy with this table downloaded to the ecu. It is a holley table that I copied from the free ‘v4’ efi software download and pasted into the sniper program. We tweaked it a little on the dyno but just plugging it in made the torque curve look like a plateau instead of bumpy steps. You might think it doesn’t apply to you but there is a ton of good info here and values that you can target with a mechanical setup.