Well since "LIONLMAN" did not post images of the Heavy Mikado fireman's side I will.

And also a tighter shot of the smoke box,

As a Southern fan would like a good representation of a Ms-4 Heavy Mikado. And as we all should know the three-rail makers most probably will NOT invest 150/200K for die cast tooling for at best a few hundred sales.
My personal philosophy is not to spend $$$$ on motive power that is NOT Very, Very, Very close to prototype. And it is Very to Very, Very close for cabin/cabooses. As stated before Lionel did hit it out of the park with the Southern & N&W high-nose GP30s.
But this Mikado falls short. But it could have been a contender.
First off 4866 has the more numerous Elesco water heaters on the top front of the smoke box. Although 4866 had a Alligator guide and the split walkways as Lionel's model.
Now if Lionel would have researched they would have found that 4829 used the worthington heater, had Alligator guide and split walkway much like their model. Also from the so so picture of 4829 I found, it appears that the worthington heater is mounted just below the walkway between the pump and cab. So even If a Worthington heater could add as an add on, it would not look too bad. Also the apparent add on turbine on top of the smoke-box in front of the stack should not be there but should be just in front of the cab fireman's side.
And of course the the quintessential Southern steam engine look is the slight lower than center headlight. Also on the Lionel model the classlights should be moved more outward. Now presuming that the smokebox front is an separate piece it could have been tooled for a modest price.
Now I for one would have been willing to pony up $100 to $150 more to make this model Very, Very + close.
So disappointing, sure would like a Ms-4!
Ron