2005 astro, spark plugs

I removed the engine cover from inside the van and changed the distributor cap & rotor. That was easy enough. I thought I could get to the spark plugs from inside the van, like a full size van. Working on vehicles is such a pain in the ass when you don't have a garage! Can I access all the plugs from under from the fenders? Or do I have to go under the van?

Raise the vehicle by the frame and you can access the plugs through the wheel wells using a 24" extension. The remainder of the plugs are accessed from under the vehicle. No need to remove the engine cover for any of them.