I couldn't imagine a 1.2. My converter is out getting restalled, I'm just hoping to get back into the 1.50s, maybe 1.40s. It's footbrake, I don't wanna put a brake on it (yet).
That ET pro, Keith Haney has gone .98X to the 60' with that tire. Not an apples to apples comparison I know, but the tire can get the job done if you adjust your program, which you seem to have no problem adapting.
1999 P71, Chevy 6.0, billet 85mm turbo, 4L80e, 3.73s, E85, etc. 8.91@153
2003 Mercury Marauder, LS swap in the works