That comes up as 1.5" to a 2" adapter in the US, the adapters I've been able to find are for larger sizes.
You also have to figure out if the measurements are OD (outside) or ID (inside).
If you have muffler shops that make their own systems near you, they can expand one end of the smaller pipe to fit.
Not sure if they can "shrink" the larger pipe down that much. It's been many years since I ran a pipe bender.