I was appreciating (once again) the Singer DLS, particularly the design of the rear bumper and rear diffuser. After doing a quite exhaustive search to see if anyone has attempted their own integrated design for a rear diffuser, I came up with nothing. No aftermarket solution, no homemade solution (other than a few bolt on solutions for the track, typically made from some aluminum-type metal), but nothing that seemed to attempt anything near the aesthetic level of Singer.
Has anyone done something similar?