I'm hoping to get ready to rebuild my Desoto hemi sometime in the spring. I just have a few questions concerning my build.

1) When working on the heads, how do I find out if I need to replace the valve guides? Is there a way I can check them or is this an item that should just be automatically replaced. I have a brand new set of valves that will going in the heads.

2) My next question concerns the rocker arm assembly. Can you hot tank the entire assembly and be good to go or should it be torn down and gone through? I'm not sure what shape these parts are in as far as being covered with some kind of baked on shellac. Not sure if the oil passages are open or plugged up. Recommendations?

Thanks in advance for any help or suggestions.