Reply to "ZF Horsepower Rating"

Ron has the power level about right for a ZF. L Butfoy can do a few things to help if you really need it; one owner famous as a brutal shifter in his 750 bhp race-Pantera regularly sheared teeth off gears during shifts, so RBT had some made from a much stronger type of steel. We probably don't want to know the cost... (He still breaks them). The later ZF cases used in the supercharged BMW M-1 are a good addition as they reinforce the differential and use heavier shafts, bigger bearings and other such upgrades that cannot (without massive rework) be installed in a 'std' ZF.
Another owner who does not bang-shift his car, successfully ran over 750 bhp thru a standard gearset and gearbox (except for the time when he flew a looong distance going over a bump at 220 mph and didn't shut off. Snapped the clutch input shaft like spaghetti on landing). Surprising how much driving style changes the requirements. Personally, 1200 hp in a Pantera is something I'd only watch. From a safe distance....