Radiator upper mounting "posts" departed vehicle

[AlaskaFestivaGuy]

Both of the mounting/alignment posts on the top of my radiator separated from the radiator and departed the vehicle. The mounting brackets and rubber grommets are still there. Is it likely that a radiator shop would be able to weld some stubby pieces of rod in their place? It looks like the top of the radiator is a brass-like color. What material should they use? If so, I'd like to temporarily substitute another radiator from one of my lawn ornaments while this one is being repaired -- this radiator has only about 35K miles since new from when I overhauled the engine. Would I have to be choosy about which donor radiator I pick? The subject vehicle is an 88LX with AC. I have vague recollections about radiators from non-AC and AC cars somehow being different.

I have a photo of the problem I can email if it's not clear what I'm talking about here.

[mechanicaldj]

the original radiators were plastic tanks and aluminum cored.

the only differences were between the automatic and manual transmissions, the auto has a thicker core(most desirable)

the aftermarket radiator is brass spray painted black