I can print it any scale. I picked something that would look nice on a desk for collectors who don't have a lot of room to display things.
I can still make vacuformed shells
I use to use Smooth On 65D its made for rotocasting but its doesn't hold up well in heat. And try Smooth-On 300 and it works just fine. I think my ratio is 3:1 its better to go slower.
I also have a Wireless Endoscope and I'll use that to look in and see what the coverage looks like.
I've done a lot of rotocasting and I found less resin is better otherwise it snap cures and you have a big hunk of resin inside. For something like the size of a helmet I would do 5 small pours or resin every three minutes.
It would be for a display at cars shows not to be driven . The Lotus badge comes off very easy with two thumb screws from underneath. It will attach there and I have two velcro straps in the back the goes under the hood.