(Aluminum) Solid Leaf Spring Eye Bushing.... bad idea for the street?

Anyone have any experience with these on the street. I have my rear end and springs out for some trunk repairs and noticed mine were heavily cracked and starting to "rot". The rest of my suspension is poly, these are the only ones I had not swapped out yet.

http://chucker54.stores.yahoo.net/solleafsprin.html

Any opinions?

I can press out my originals, take some dimensions, and make them up at work for the cost of the material. Once I have the dimensions hammered out I can post them (kind of like my steering box rebuild)... If anyone would be interested.