Just saw this, Am I having a Senior moment?
http://www.ebay.com/itm/PETE-CORNISH-ALEMBIC-F2B-PREAMP-DAVE-GILMOUR-SPEC-/221564834671?pt=LH_DefaultDomain_0&hash=item33964b136f  
 
It looks like it from the Post #.

Given that most used F2Bs I've seen recently have gone for around $600 and you can get a new one from Will Gunn for a nice discount off the $1675 list price the TWO MORE TUBES, UPGRADING OF THE CIRCUIT, AND ADDITION OF BRIGHT AND MID-BOOST SWITCHES added by Pete Cornish would be costing the buyer a minimum of $2,600. Those are some expensive mods regardless of the background of the person doing the work.