I finally got a response from Jeff at Soniccraft; busy holidays....
Long story short, to rebuild the 3.1's with Sonicaps (All generation 1 except for the Platinum bypass), the total in parts is $352.
I can do it with Solens for less than $90
So here goes to you guys that have used Sonicaps (Jesse, Carl, George...).
I need some words from you....words that can convince me that the sound is going to be so much better that it will be worth the huge upcharge.