Tange 2 tubing wouldn't necessarily make it a non-Ironman model. The Lemans RS had Tange 2, also, but never had 105.
From the tire clearance, I doubt it has the geometry of the Lemans RS, though the size kind of makes that difficult to say 100%.

My impression is that it is simply a European version of the Ironman Expert, but with Tange 2 tubing. Pretty cool.

Miami Vice colors!

Far out.

Welcome to the forums, by the way.
Glad to have you around.
What are your plans for the bike?