A few things made me think its Sulawesi. First, the pendoko is the long-stemmed form type, which is more typical of Sulawesi than Straits. Straits Bugis tend to use the 'short-stemmed', wide-rimmed pendoko. The kerdas hilt should also shed some clues, but from the angle of the pictures, I can't tell.
Secondly, the sheath has this 'awkwardness' (not in the bad sense, its probably just our sense of aesthetics in this part of the Malay/Straits Bugis world is different from the Sulawesi Bugis). Its difficult to describe, but Sulawesi-made sampir has this 'unpleasantness' that contrasts with the 'sweeter', better-shaped Straits Bugis type of sampir. Also, the batang has this bulge (swollen part) near the top. Straits Bugis batang tends to be more 'straight-up straight-down'. The buntut too -- oversized and odd-looking, adds to the awkward feel.
The blade is the hardest to tell the origins from because the blade outlasts the fittings and do travel around the region and gets dressed up to suit the owner's culture and tastes. But this blade has again this characteristic Sulawesi 'awkwardness' that I do think its a Sulawesi blade. And of course the sheer proportions and thickness of this blade is 101% Bugis garang-ness.
See one of my previous post -- see the 'awkward' resemblance.