Lightweight, 6'5 Headroom, shower, 90's-2010's, suggestions?

All I can say is, good luck. And, learn to duck because I don't think you're going to find a camper with "cathedral ceilings."

When you're talking about 10-30 year old campers, it's more about what's out there than any specific brand or model. If it's solid and water tight, it doesn't matter what brand it is.

There's the standard answer of "Four Wheel" and "Capri" but good luck finding a used one of those for sale, and I don't think you're going to find one with extra head room.