I have a 2005 Dakota. I would like to know what kind of rockers I have, and the ratio. Also if there is an aftermarket upgrade for these. I've seen them listed as hydraulic end-pivot roller rockers. Are these special, or can I just replace these like regular rockers?

 

you have the normal junk 1.6 rockers. they are stamped out of a mold. the new roller rockers that are 1.7 are an upgrade that need no modification. will help motor run better. krc has the rockers and guide plates.