super a rocker arm question

the original rocker arm assemply which is way past shot and rusted, the rockers are made from sheet or stamped steel, but the set i bought from ebay are cast and in way better shape. but my question is, which is better and is there any concern using one or the other on the same moter as in interchange and such. the tips of the cast one are so much better and not worn in like my others so if no problems thats what i want to use, unless performance or interchage problems say other wise.

thanks in advace for everyones help in this rebuild.

I would think the cast ones would be more brittle, guess I am wrong?

I know the collars (part that bolts to the fenders) on mine are cast and the rest is stamped metal.

I never seen ones that were all cast.

He was talking about the engine. I was thinking the rocker arms for the implements.