Bought my Incus muffler tip in SG, couple weeks back and finally got it installed today in Kepong. The INCUS muffler tip is made from AJUN metal (http://www.ajunmetal.com/) famous car muffler and performance exhaust system manufacturer in Korea. You can view their product range on their website.
The installation of the muffler tip took about 20 mins. First the back cover at the back of the incus body kit needs to be removed, which can be easily done with a sharp blade. Once this cover is removed, the exhaust pipe is visible, then the original curved exhaust tip need to be cut.
Once that is done, the Incus muffler needs to be welded in. The Incus muffler tip weights about 2kg.