Lego on the Link. CSX 1712 (SD40E3, neé-SCL 8130 SD40-2) is a rebuild, the style of whose nickname has become “lego”. On the afternoon of Wednesday, June 10, 2020, it was leading Y221 to make up the evening’s Q704 departure, taking head room on the Oak Point Link. The area is undergoing dramatic redevelopment as new industries move to the neighborhood.