Yes, a new wing, but not completely new. Many parts from our Bf 109G-6 fit perfectly. The airfoil is the same at both root and tip as far as I can tell. The wing ribs are identical at those places anyway. The wingtip, ailerons, flaps, and many parts from a Bf 109G-6 fit. We are, in fct, unsing the wingtips from our Bf 109G=6 on the Ha-1112. The spars are different, and there is a small bulge on top of the wing for the cannon breech, but the planform is the same. I know the gear uplocks fit because we went to Bf 109G uplocks when the Ha-1112 uplocks went missing after 10 years of storage. I was on that project at the time we did that. We'll probably find the old ones now that the new uplocks are in place. It usually works that way.
The Ha-1112 is basically a Bf 109G from the firewall back, with the main difference being the wing armament due to the fact that the Merlin was never designed for cowl armament or for a cannon to fire through the crankshaft. The canopies are interchangeable.
But from the firewall forward, there are zero common parts. This one will have a Merlin 224 when it flies again. That would be a Packard-built Merlin 24. It will have DC-3 glider tug wide-chord prop cut down to match the contours of a Bf 109 prop.