On the air cleaner, air comes in from the bottom edge, the cover is a larger diameter than the base. No cast cranks till the 400. I'm not positive but I think I remember seeing a pinkish- purple mark on the stock hipo cam too. The two springs are different, got both. My book shows two 383 engines in 69, 2 & 4 barrel, 2 bbl got the small cam 4 bbl got the big cam, it shows Barracuda and Road Runner having same engine. Couldn't find anything about the windage tray. Been a long time, can't remember all the stuff.