Hey there!
I currently have 10 DW300C fuel pumps in stock and ready to ship. No waiting from DW direct, pay and go. Yes it requires extensive modification to the oem bucket, but the only reason I recommended previously to get a second bucket is to get new filters, a new electric module and to reduce your downtime during assembly. If you are able to leave the car down for a bit to make the modifications go for it. I just prefer a 10 minute downtime versus a 5 hour downtime and I wanted new filters since you have to reuse the OEM filter.
As for having them available turnkey, I asked DW about it but since the "kit" that comes with the DW pump is for multiple different vehicles, they weren't interested in adding stock figures to have them turnkey. They have assembled about 5 kits that I know of - myself, Jordan, and a few others so I know they can do it problem but not sure the juice is worth the squeeze for them. Perhaps if we were to get a bulk order they would be willing to do a set of 10 or something.