[Looger]

i've heard all kinds of descriptions of 'production car' but i think the most legitimate one is that the vehicle is its own VIN and is sold at a dealership as a new car, not a remanufactured / rebuild, and that it's insurable.

the motoring media referred for a long time to the mcaren f1 as a production car, but not the calloway sledgehammer, which was a heavily modified corvette that went 254 mph.

so the VIN on the 'hammer would technically make it a corvette, therefore not stock, not production.

not sure how the SVT vehicles fare, i know that the saleen mustangs are purchasable at special dealers.

EDIT: the car has to abide by crash / safety and emission regulations as i recall.

the porsche 959 most famously couldn't conform to the emissions, the mclaren had to have stupid add-on bumpers to be legally sold (i'm sure all owners took them off straight away) for bumper height.