Arntz Cobra identification

[mbuc4309]

I have acquired what we believe is an Arntz or Arntz Butler Cobra kit (largely not assembled) from an estate. Due to the owner's passing, I have little information about it. We have the body and frame, small block Chevy with Muncie trans, Jaguar rear, and MG front suspension. Our plan is to sell the kit but we first want to determine exactly what we have. I have a number of photos but kept getting upload errors when I tried to attach to this post. If anyone thinks they can help me with this, I can send several photos. Thanks for your assistance.

Here's a link to several photos of this car. You'll need to copy and paste the link into your browser. I couldn't get the insert link function to work right. Thanks in advance to anyone who can shed some light on its origin and build date.

https://photos.app.goo.gl/4LVxXWOuytylX37z1