The stroker brought spool up by around 5/600 rpm in comparison to a 3.0.
The way a stroker drives off boost as well is great. You have a nice low down grunt and it was effortless for the turbo to come in, even with a large T6 framed tubby.
The area under the curve increases, as well as the peak torque.
The only issue with using a 67mm turbo on a stroker is, that due to the extra efficiency of your engine, the turbo will be running out of puff that much earlier as well. However, this then opens up the opportunity for you to have the option of using a slightly larger turbo, gaining more power and torque, yet retain the driving characteristics of the smaller setup.