looks like standard pipe diameter, its only ever the tips that are bigger (like trumpets) on other cars. zed is a prime example. or was on my invidia exhaust.
as for the design i like it.
its not like the original was that good loooking, its like the apache helicopter of the car world, so ugly its actually good looking. and the advantage of the stratos is that they will only be about 50 of them, so exclusivity is the pricve to pay.