Thanks Viperman.
I had the start button made by a vendor at the VTCOA forum. For modern cars it's a lot easier for someone to find something that works for every vehicle. The trucks come with starter buttons standard, so this vendor made glowing lights with anything you want on it. 95% of the truck members got Viper snakes. I wanted the Bat logo to go with my theme. It was only $120 USD + shipping. Connect and clip into place straight out of the box, ready to go.
The centre caps are plain billet caps shipped over to me by Jim aka Slotts. I then had them powder coated satin black (like my wheels), then had custom Batman decals made locally. Apply them to the caps then clear coat and that's it. Simple process but it still took around 2-1/2 months to have them completed from the USA to mounted on the Batram. They bolt in from behind to, not stealing these!
The other bits and pieces are just a little thought and time, planning what should have what, not too much? Too in your face? Needs something there but what? Etc. I had custom decals made. The fire extinguisher is simply painted black and had a custom decal applied. I'll post some of my interior once it's done. Should look really good and subtle, unless I stuff up spraying my dash.....lol....not really looking forward to that.
If you or anyone ever need something they think is hard to get or make, send me a PM/email.
I may not be able to help but I also maybe able to help so it's worth a shot.