sure its impressive but you can't compare your run to what marcin (lt1ultraZ) would do vs his car. His car hooks hard compared to you or my car due to the way the torque comes on. I can't imagine driving yours on some regular radials with 346+ ci and 10 psi and an 88 mm turbo.
I was spinning my 275/40r17 nitto drag radials in 3rd gear everytime from like a 50 punch last saturday night though the cold weather didn't help much...the way the torque comes on with my car is crazy though...full boost at the torque peak of the motor (3600 rpm) is hard to hook up.