Nice, it's a cool Lancia Stratos, just not a Group 5 Turbo.
I have one of those in 1:18 diecast too that I have grand plans to customize into a wheeljack. It's only 2843rd on my customs-to-do list. I have a grand plan for a whole slew of 1:18 diecast autobots. I have the lambo twins from Kyosho, bumblebee, cliffjumper Autoart Porsche 924 turbo, a red 80's Trans Am, silver and white 240z's, and a Porsche 935 in Martini livery (but it's number 40 instead of 4). And I think I have that same Willys jeep. I bought one from Ewok many years ago during one of his purges.
Is your Mirage the Tamiya 1:20 model kit? I've got one of those kits, but I haven't built it yet b/c I'm trying to get closer to 1:18. I've got a 1:18th late-70's Renault F1 car that's practically identical to the Ligier JS11 styling-wise, but I haven't made time to Citanes him up.
I'm impressed, as I didn't know anyone else but me was "working" on a full set of 1:18 autobots. You have great taste! We should compare notes. I don't know what Gears, Brawn, and Huffer are based on. Trailbreaker is screwed b/c 1:18th toyota trucks of any kind are non existent, ditto for the vanettes.