58 Apache rim and hubcap help needed

[keenebolter]

I have a 58 Apache that came to me with what I believe are none original rims. They are 15" rims but the center lip where a hubcap would fit in is different than what I believe an original 58 should be. There seem to be four pronounced bumps on the outside edge of the center lip of which two are larger and have a deep groove in them as seen in these pics.

http://s824.photobucket.com/user/kee...t0vac.jpg.html

http://s824.photobucket.com/user/kee...oic95.jpg.html

http://s824.photobucket.com/user/kee...x0bux.jpg.html

What I would like to put on my truck are the original dog dish hubcaps like these here.

http://s824.photobucket.com/user/kee...i0own.jpg.html

I was hoping I could install the metal clips and make these original style caps fit. I do not have an original cap in hand to see if it would physically fit in the center but I did take some measurements. The inner circle diameter looks to be 7.75"

http://s824.photobucket.com/user/kee...gdj2c.jpg.html

The outer diameter to the surface of the two larger knobs is 10.25".

http://s824.photobucket.com/user/kee...ergkp.jpg.html

Does anyone know if the original hub caps would fit in these wheels? If the originals won't work, does anyone know what style dog dish cap would work with this style rim?