PNG has so far won three out of four games after losing to gold medal holders New Caledonia in their first game. The home boys defeated American Samoa, Fiji and Nauru.
Tahiti has won all their four matches against Kiribati, Solomon Islands, silver medal holders Guam and Samoa.
This match is expected to be a showdown in front of a sellout crowd.
PNG will be led by captain Dia Muri and playmakers Wright brothers James and Allan, Gabriel Elavo and Matiineng-Iakah Leahy.