Hi Jeff,
I have a SD Custom that I purchased recently off of ebay. The pickup is used, and the leads are short - you'll need to extend them. Because of this I won't ask much for it, or could trade - depending on what you have.
I could do you a Custom/59 Hybrid in double cream, but I only have vintage early 80's Duncans to use as the platform. Probably wound by Seymour himself or MJ... the cost would obviously be a little more than usual.
I also may have a JB/Custom Hybrid double cream TREMBUCKER...