This summer, I plan on swapping to an H22 and installing Skunk2 stage II camshafts and an upgraded valvetrain. My question is: is it possible to install a camshaft/valvetrain without pulling the engine? If I have to install them when the engine's out of the car, I might as well just install them in the new engine before it goes into my car. I just really don't want to spend all that money at once... the motor will cost enough already lol