Thanks Dave. I printed out this info. I like the idea of new eagle heads on my 5.7 if bottom end is fine and hellcat lifters and springs and not adding to list with the 6.4 block. I am very satisfied with the stock power despite more power always better. I'm super on top of preventative maintenance (coolant/distilled water and watching temps, new hoses, thermostat, tensioner and idler pullies) so I don't foresee ever overheating. I hate waiting until something does happen. Much rather have a file with info so that I'm not starting at zero if I do have a problem and car is down for months.