Hmmm... the blade looks like a Malay Bugis Riau, Luk 7 piece to me.
 
The hulu and sarung are appropriate, but as mentioned... the mendak need to be changed to an appropriate type... either malay or bugis.
 
Click [ 
here ] for some examples. 
At the same time, maybe you could modify the hilt base, click [ 
here ].