The springs are TFS-16893. Installed pressure of 120lbs at 1.875, and open pressure of 394lbs at 1.175. These are the springs that trick flow sends with their flat tappet 240 heads. I spoke to Howard's cams yesterday to pick their brains about things, and he was a little concerned about the spring pressure. He said he generally doesn't like to see more than 360-370.
Anyway, he recommended getting the cranking pressure up in the 185 region, moving in two degree incriments until it gets there. I'll be ordering the stall converter today, then get that in and get the engine dropped in quick. At that point I'll pull the timing cover and check/adjust the cam timing so I can crank it over.
I plan on 30% street and 70% bracket with the car. Just taking the kids to school, a few local car shows and such.