Thanks Q! And I was thinking the same thing about the engine....just couldn't figure out what to do to make the clear red areas look more worn. But now that you mention it and after looking again, I missed washing the entire backside of the engine (white squares, etc) ! Oh well....guess I'll have to go back again.
If you are going to go back and wash the engine maybe think about streaking the exhaust trough walls as well to match. Now that it was pointed out I have to agree that it looks a little too clean back there.
Really nice job on this. Gave me a lot of ideas for mine.