First time down the track

I took my 67 Barracuda to the track for the first time last night. Had a blast but feel like I’m definitely leaving some on the table. It’s a 408 making around 450hp, 904 3000 stall, 8 3/4 suregrip 3.73s, 3200lbs, these two runs we’re on street tires. How much do you think I’d stand to gain going to drag radials? Drove it to the track lowered tire pressures and raced it, any other adjustments I should have made?

Run 1 Run2
60’ 2.248 2.303
330 6.319 6.022
1/8 9.458 9.069
Mph 79.44 81.05
1000 12.115 11.688
1/4 14.346 13.898
MPH 101.44 102.38