Thanks for your comments. FYI, 48 IDAs are actually back in (limited) production. If you check the usual sources, I believe you'll find that you can buy all of them you want depending upon the depth of your pockets. I've seen prices for units from the recent production expressions ranging from $495-$695 depending upon who is offering. Pretty steep, but seems like people are asking $2-3k for well used sets of 4 on an intake.
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