I recently picked up a Black 05 Roush, combing through this post maybe it isn't one on you list already, vin 1ZVFT82H755174013, roush sn 05-0565. I look to be the 5th owner, 33k miles, super clean. Looks to be a stage 1 but still need to contact roush (on my to do list). Has the S1 gas cap, wheels, dash plate, gauges have thrown me a little from what I have seen, they are silver faced, light up red when turning car on, light up green when lights are on.
I have enjoyed reading through this post and all you have collected.