455 piston brand

Hey everybody, need some help here.I tore down a 455 that had just recently been rebuilt(even though two rods bearings were into the copper) and it has some pistons in it and I am trying to find out what brand they are,they didnt have any special marking that I see but if I new what too look for it might help.I sent some pics-hope they go through.Any help would be appreciated.Thanks

 

piston id

They look like factory style castings. Any numbers on inside of skirt? They may be egge,zolnier,or some other name.

 

They are just stock replacement cast pistons, Look alot like Nylen. Jim Burek

 

Thanks for the reply guys.I was pretty sure they were just a stock repl piston,dont know what hp level they could hold though.