There needs to be a 1.3L DOHC on the west coas
As far as a cheap 1.6L, the u-pull-it / junk yards are going to be the cheapest for JUST a working motor.
If you want to get A/C, Fuel Injection, Power Steering etc - I strongly suggest you buy a Sidekick / Tracker / Esteem and use it as a doner vehicle. You can buy one for less than all the individual parts will end up costing you. You can part out the rest of the bits you don't want, and even take some thing you may need (wheel lockers etc) in the future. Then, sell the body to a salvage yard. Some people have acutally MADE money doing this after parting out their doner vehicle.
~J~