Agree with MFS; this is entirely possible, but contact the FAA directly for the straight skinny.
It is quite commonplace for a data package to be extended to a developed model of the same aircraft by analysis, offline simulation (using the manufacturers aerodynamic/dynamics design simulations) and even tuning using an approved flight simulator. The more usual method is to analyse the changes from the aircraft as tested to the aircraft standard now being certified, and produce a delta flight test data package based on those areas expected to be most affected. The exchange of opinions between manufacturer and certifying authority can be quite concilliatory regarding level flight performance, static stability, etc but can get downright nasty when it comes to dynamic stability and handling! No surprises there ........
One minor point; the vernacular I'm used to is Data Package for the data coming from the aircraft manufacturer. The QTG comes from the simulator manufacturer and shows the match of simulator data to the aircraft data. It is entirely possible to produce a QTG without using all of the supplied Data Package......but that's the subject of a new and seperate argument between the simulator manufacturer and it's certifying authority.