1993 Prowler. I have replace the frig, took out the carpet, dinette, couch, bed, and furnishings. Added two tables, chairs, twin beds, flooring, shocks, vent covers, and shelves. Repaired, replaced, or rebuilt the landing gear (twice), water heater, roof, siding, door, inverter, five windows, awning, shower tub, microwave, circuit breaker panel, slide floor, slide mechanism (cable), flipped the axles, welded spring shackles, and a host of small repairs and maintenance jobs due to pack rat, blow out, and weather damage. This year I repainted the exterior.
It is not perfect yet but it is getting there. :)