Don't know if you want to communicate out to the troops and/or on your website, but I have found out that Advance Auto Parts sells rebuilt 3.4L SHO motors as a special order engine item. Availability does vary, but as of today, they currently have 5-10 engines available from their rebuild vendor. The price is $3665.99 plus $550.00 core charge (you bring your old motor back & they refund your $550). Simply go to the store & talk to the parts pro and they can contact HQ for engine availability and a shipment/arrival estimate.
If anyone knows about warranty or any details get back to me and I shall edit this page. - Buford