I also have a Toyota Passo 2011 (1KR-FE) with 86,000 KMs on the odo and am thinking of a rebuild. The engine consumes around 1.5L of oil every 1000 KMs (I use Valvoline 5w-30 Fully Synthetic) From my research on previous posts well informed users here suggest a "Smoke Test" and a "Compression Test" I am willing to get that done but I am also wondering where these parts and entire gasket kits are imported from? And what their cost is. I have seen Rehman Autos videos and that stuff seem very legit. Also, anyone in Karachi doing that kind of great work like @rajaatta ?