The rear clip is the most visible panel on the facebook post, looks to me like they've made a buck themselves rather than mould of anything else out there? There are differences to Lancia/Hawk/LB as far as I can see but it's a way better attempt than anything I'm capable of in my own garage. Without a kit from Hawk! As Chris says, it's a slightly longer wheelbase on the X1/9 so something is going to look slightly odd somewhere to our eyes, probably get lost in the A pillar area so look for a slightly longer door or section on the front clip behind the wheel? Going to follow this one with interest to see what they manage to make of it. I wonder if the use of an X1/9 "chassis" would obviate the need for an IVA test?
There is a precedent for a Stratos replica on an X1/9 chassis too. I'm pretty sure that's what Andy Saunders used on his Stratos Zero car?
Guy