I have extra Octavia PCBs.
They fit in a 1590B as seen in the photo.
It can be built several ways as seen in the layout image.
My version, built with negative ground (so it doesn't need a separate power supply) and most of Soulsonic's mods from viewtopic.php?f=10&t=4579&p=68561 is absolutely killer.
$8 each by Paypal includes free shipping to North American, Europe, Australia, Japan, and most places.
PM me or use http://boardshop.weebly.com/