They have that head sale every year and every year I stare at it saying to myself "should I?". I remember when I saw Brian Hicks' Challenger KOS car back in the day at the ROCK and he was running a KB aluminum B block at 470" or so running 8.80 after 8.80 with an old Compucar 200 shot. All steel car with KOS rules. The thing that really got my heart racing were his 8600rpm burnouts and his purge the nitrous with the gas pedal technique! He caught on fire that race unfortunately, fuel solenoid I think.