If sizes are the same, which I assume, then there are three exhaust collectors available.
1) 3298 /26 Silencer compact for MVVS 1.60 (the dustbin silencer, very compact, large power loss)
2) 3270 a roomy three chamber side muffler, which has amazingly good power, just slightly short of:
3) 3266 Tuned pipe for MVVS 1.60 (needs separate header)