The old bests are in my sig, 1.43 60', 6.67 1/8th mile, 10.54 @ 126 in the 1/4.
The main differences between the old motor and the new......The old motor was a small solid roller, 248/254 @0.05 with 0.576/0.584 lift and 10.8:1 compression....the new motor has a bigger solid cam 264/268 @0.05 0.621/0.632 lift with 13:1 compression.