Awesome job of detailing. You can see a lot of hours spent on the car. Congrats.
Here are a couple of things I did notice seeing as you asked; The battery cable to the starter looks like the strap in installed upside down onto the shock stud, The trans mount and rear axle bumpers were only yellow on Hemi cars, looks like you may have philips head screws on the wheel alignment access plates( I have only ever seen self tapping hex headed screws here), Wiper motor does not look detailed enough to match the rest of your great work, the part number on the coil should be green stencil not white, the bracket doesn't look cad plated either, trans pan should be a natural finish not painted. looks like there are grommets on the T-Bar crossmember where the fuel and brake lines go through? Just a few things seeing as you were asking, I'm no expert either but you do have a very nice Challenger there, Cudos to doing it the way you did instead of cloning it into an R/T.
The trans mount was replaced with an NOS one that I found on ebay. The rear axle bumps had yellow on them when I removed them cleaned the undercoating off of them so I just put back what I found. The pos. battery cable strap could be on upside down. That damn thing keeps popping off of the shock stud anyway. The philips head screws on the access plates for the allignment were there when we got the car. Being that this is a VERY early production car (sched prod date, Sunday, Sept. 28, 1969) it is possible that those are what they had laying around. I don't know for sure. Maybe someone else who has a early built car can chime in. The spark coil lettering color is being corrected as we speak. I know what you mean, the correct color should be a mint green like the one on my 69 charger. Maybe if mom is nice, I will let her steal mine for a year for a show. The bracket for the coil is natural plating on it, I just put some oil on it to prevent it from tranishing/rusting. As for the barrel of the wiper motor, yes, that is something else that needs to be "polished up" if you will. At least right now it is the correct color versus the white body color paint that someone had painted it at one point. The trans pan will be refinished in the correct zinc over the winter when we drop the pan to change out the trans fluid. Something we already planned on doing. As for the grommets on the brake and fuel lines were it goes through the crossmember, yes those seem to be original to the car as those are the original steel brake and fuel lines. Also, upon closer inspection of the rubber grommet, they seem to be original as the rubber is starting to dry rot in places which also leads me to believe that they are original. Again, this is something else that I have never seen on another car, just like the flat washer on the end of the trunk lid torsion bar that is tack welded onto the bar. It is hard to say for certain what Chrysler did back in the day but if I have enough evidence that leads me to believe it was done that way, then that is the way I return it to.
Thank you for chiming in and pointing out those items. Like I had said in a lot of my previous posts, I am always trying to better our cars as much as we can. Granted, I know you are never truely done working on them (especially since we drive them and have to constantly clean and touch up stuff) but at least I am to a point where I can really enjoy them by driving them instead of constantly turning wrenches on them now.)