In my 95 Caravan I bought Delco plugs. Yes, the ones I removed were champion. I had to choose between Bosch and Delco. The guys in the shop recommended Delco. I was under the car looking at the back 3. I didn't have time to install them though. Do you think changing them from below is the easiest method? Looks like I'll have to get a long screwdriver to push the plug cap off. Anyone have any history about removing/re-installing them? Mike