The Toyota Echo has an inline 4 cylinder engine. The number one cylinder on all inline 4 cylinder engines is the first piston at the front of the engine. The front of the engine is the end that is opposite the transmission.
There are a number of places where one can purchase a 2004 Toyota Sienna. One may first want to check out local used car dealerships. One can also check out websites such as Auto Trader, Kijiji or eBay.