I had to come bump this again... Talked to the car's owner yesterday. Specialty Z down in CA yanked the motor, fixed a bunch of crap, and got it back together, and it runs great! At 30psi, without N2O, it put down 713 whp on their chassis dyno! (don't know what dyno they're using) They plan on tuning it for 36-38 psi, and then adding the spray!
He ran it on the holiday weekend out at Fallon, and said he was putting down mid-10's with *major* traction problems off the line!