sorry to hear about ur gf back prob bro..its quite bad for them esp on long distance travel..my dad has this as well,and he actually prefers my car seats (wiSE) to his vios..but seriously,before you go out there and buy them make sure you test a few with your gf..mayb take her to the shop or use a borrowed ride..diff ppl got diff preference..and yeah,adding sponge to your existing seats may work as well

how much do those SSCUS seats cost btw?
wheres the shop near subang airport?

That site says pahang or something la..no price aso