E.T. slips can be cruel. I don't want to be the wet blanket, but I'll say high 15's. I base that on the high 14's my '69 turns with L78 cam, headers, 2 1/2" exhaust, 3.31 posi, and street tires. This was in hot, low density air. Your times will depend on the air density, track condition, driving technique, and state of tune of your engine. Let us know how you do. von