I have 2 GM standard (non-regen) controllers for sale, new, unused. 15 fets, 48v 33A, I think they were rated by GM at 1000w continuous and peak at about 1600w.
They are surplus to my requirements now and aren't listed on the GM sales pages anymore.
They are also drop-in replacements for the black regen controllers.
$70 AUD each including registered postage within Australia, $60 USD for overseas destinations through paypal.
Reply here or send me a PM.
Rob.