SBC for life! Cool upgrades, should really wake it up. Any particular reason you're looking at more road course stuff now?
Also, on the issue of a scattershield, I will throw in a big time recommendation for picking one up as well. We exploded a clutch in ours at the drag strip, but it was when it was turning around 6-6,500 rpm just like it does multiple times per run on the autocross course. Lakewood saved my feet for sure - this was so violent we couldn't square the transmission afterward.