Our 1992 Puck's seats are beginning to look rather worn and sleeping is becoming more uncomfortable. Thinking we need to reupholster and wonder if anyone can recommend a reputable company sensitive to the needs of an aging Eriba? Should we continue with the springs or go for more solid foam type of thing? Authenticity is important to us but so is a good night of sleep. Have read info. about toppers/Duvalays etc. but nobody mentions the additional weight to the van and personally feel this might be too bulky for our little home. Thoughts?