Thanks again for the info. I also apologize to the o.p. im not trying to hijack your thread. I understand that the 902s and 802s are about the best small format drivers for home use. New components get a little expensive to use for an upgrade. I think the valencias would definitely benefit from the h.f driver upgrade, but by how much, it's not a huge improvement. I don't think the improvement is worth the cost, unless you had an extra set laying around unused. Then there's the mods you have to do to the rear of cabinets to get them to fit. If i had a set of perfect cabinets, i would think twice before i altered them. Altec had it pretty much right, from the factory. I would love to see those grills too, thanks.