Welcome to our forum.
My tub is as old as yours too lol. I purchased mine in april-May of 03. My pillows are still holding up well.
My filter area looks great,although,the weir skimmer basket and the other 2 parts that consist of the weir skimmer,show signs of age. The plastic is rough in regards to the weir skimmer,and hangs up on occasion. I plan on replacing it in the next year or so.
My shell looks the same as when I first purchased it! Very happy with the shell. The cabinet shows signs of age,and I believe it's because we live in a very hot/sunny climate.
I just replaced the euro pulse jets in my tub,which I first upgraded in my tub,after initial purchase. I replaced 20 of em. I do need to replace the Versa-sauge bearings(6 of em total in the spa) as 2 of the 6 hang up occasionally.IHere's a link/URL of a site I use on occasion,for parts.......... http://www.spapartsdepot.com/c=Q5As23zQBuRnOBWmg2ir205uO/category/jets___jet_parts/ It's not the cheapest nor most expensive site,but they do seem to have almost anything needed,for a spa.Oh,BTW,my spa is a 2003 Caldera Geneva Utopia