Did OK at Vintage Drags in Tx

After switching from 29.0 tall to 32.0 slicks, my car slowed down just enough for me to go down from Super Comp to Comp class at Little River Dragway's semi annual Vintage Drags.
Then the track manager dropped a bomb at the driver's meeting when he proclaimed that both classes can use delay boxes. We think he mis spoke, but since he said it, he had to honor it, so I had to go against the top bulb boys, but I was always the faster car and that helped until I managed to shoot myself in the foot with -.004 red in the 4th round. The car ran great, very consistent and zero spinning issues with the new 32.0x14x15 Hoosiers with D05 compound. I wish I had switched to these years ago! Now I can go to the tracks in my area with bad prep and be competitive.
Here is a close one and a double breakout in round 3 against a Hudson named "Hemi Hunter". I pedaled at the end but still broke out:

What was the time difference from going to the big tires ?