OK, here is the deal. a dynapack will dyno about 4-5% higher than a dyno jet roughly.
This dyno operator also included a rediculously high TCF which is the correction factor to take give the fly wheel HP.
1.3 is the factor which is beyond any driveline loss you will see on a stock mach 1.
Your numbers are all BS. if you give us your exact mods we could probably give you a more accurate estimate of the power you have
btw, are you auto or 5 speed?