@
Calum:
That chart you posted shows aftermarket headers being used with the SC kits (hence, most likely not on the Carb tune neither). So, of course it will have more whp.
As far as my numbers (besides the aforesaid 153whp baseline Mustang with a 206whp result from a jrsc carb tune).. I'm personally basing it from a few other dynos I've seen, with jrsc carb tune running 245whp on dynojet (with around a 180whp base iirc)..around 270hp flywheel if I'm not mistaken. Correct me if I'm wrong.