Back the wagon up. Easy, yes, that easy, no. Intake has to come off and a few other little things need to be moved out of the way. You also have to remove the timing belt. no big deal, but at the very least you have to remove the plastic from the side of the engine. Unless you bought a head with cams and a distributor you will need to swap those as well. And last but not least, the exhaust manifold has to be removed. easy to get to, but old rusty manifold studs are a lot of work.