ya, remove the radiator and mabe the front bumper and everything esel that need to come off the front and top end and itll slide out but much easier to just remove the engine in my oopion
I would use the Snap-On cam berring tool. The thing I would worry about would be dropping a berring into the engine. Snap-on says it is possible. I thought of a custom cam, and don't want to put it in some old worn cam berrings. They are still good, but I bet new would be better.
I would think that driving the old ones out, especially the back one would be an issue. Im pretty sure that rear plug has to be out and driving it back in would obviously be an issue. Cam bearings are easy to screw up if dont know what your doing. Unless there is some overwhelming reason to change them and your just doing a cam swap, I wouldnt worry about it.