Thanks everyone for your input. Sounds like I better go with the other set of HS rockers.
I doubt that my retainers and keepers are designed for lash caps.
I bought the TF 240 heads when they first came out.I had oil leaks because of the dimples that were cast in for machining purposes. The paper work that came with them said I could use stock manifolds, rockers etc. I assumed that since the set of HS rockers I bought were for use on Mopars that they would work. I noticed that the rocker tip did not hit in the middle of the valve stem but I assumed they would work. Then just the other day I read a post that the HS rockers were too long. I looked on the Summit website and found a question posted just this past October (almost a year after I bought mine)asking if the rockers would work on the TF 240 heads. Harland Sharp answered "no" and that the "S70015KE" ones are needed or lash caps.
It looks like a new set of rockers are in my future.
Thanks again.