From going through that other thread, it looks like it was made out of similar material and for the same reason I made the one for the TC. Even the rear diffuser seems to be made out the same material. I have been tossing the idea of doing a rear piece for the Base Z after I was successful with doing the front of the TC. I got the inspiration after a friend told me it took 2 days to mock and build a rear for his supercharged BRZ. Again made in the garage off jack stands. Instead of using 1/8" I think he used 1/16", riveted all the fins in place, then had it powdercoated wrinkle black. Came out great. He told me how he did it using large construction paper for templates. I thought I could easily do it for the front by simply tracing the lip out.