While researching the small block ERA cars, and backdating one to 260 specs, I stumbled on a English company Hawk Cars. They make kits of the small block Cobras, plus the 2.6 Ace, which is the car that became the Cobra , plus the Barchetta 166M Ferrari Mustache AC Ace cars. Like the ERA, they all have coil over suspension. I then discovered a sight where an enthusiast is building an Ace, and going over board trying to make it perfect. Below is an article on adding dummy leaf springs, which might also be used on the ERA, so when you pop the bonnet, you will see the correct springs! Oh, and don't forget to wrap your leaf springs with Drevo tape, like the original cars.
https://aceac.weebly.com/dummy-leaf-spring.html https://www.vintagecarparts.co.uk/pr...evo-denso-tape