You need to be extreemly careful buying rod ends from a place like that. You don't really know what brand they are, and it is easy to order something that sucks.
For automotive applications like this you really need a joint with a good self lubricating Teflon lined race, stainless steel or hard chromed ball, and a chromoly housing. They are not cheap. Aurora makes good joints. The line that would be best here is the AM-T, AB-T, AW-T, and AG-T series. FK Bearings also makes great joints that are similar in quality to Aurora but a bit cheaper. The JMXT is the one to look at.