Dan,
Take these steps.
1) Remove Rockers
2) Sell Rockers
3) Install Cam of your choice
4) Drop Pulley sizes by at least .2"...get a GOOD TUNE
5) Reap benefits from real modding.
I had 1.84 Roller Rockers and a 3.5"...then I went with an XP Cam and a 3.25"...car went from barely chugging into the 13's at 98-99 mph...to running low 13's at 104+.