Bad Hadraulic Lifters, Maybe?

shaft might have siezed into the bushing. If you can come from the bottom with a long thin punch and drive the shaft out the bushing might come with it. The bushing can be installed in the car but it should be swedged with a install tool. I found the tool on ebay pretty cheap. With the HV pump you have I suggest the heavy duty intermediate shaft. Can't remember the p/n but mopar performance sells them.