You could try to get in contact with
datakompaniet it is a Norwegian webshop. In the early days they had some nifty amiga parts. Though they don't advertise it on the site. they may have something laying around. I you know specific what to ask for... Maybe someone could be lucky there...
(last time I spoke to them they had some BVisions in stock, and I do believe they got some leftover GVP simms...)