No.. the spoolup is slower. Probably a little more converter and it wouldnt be so bad but that car is marginal with the converter vs turbo size anyway.
Essentially we had a problem with the car after the header installation that was my fault. I didnt get one of the plug wire boots snapped back all the way so we made a couple of pulls and lost 15 horsepower and were scratching our heads. After finding that, we made another pull with everything correct and saw our boost level had changed from our baseline. So, the run you see is with the boost level adjusted back to where the stock header pull was made.
I do think these things are going to shine the most on aluminum headed sub 10.50 cars. I think this car is borderline to where the benefits start to show up. This is a stock cubic inch motor, stock compression with nothing special ported irons on it.