Heater core replaced, heater reinstalled all seems well but with the minor exception that I don't have air flow to the defroster so I must have mixed up one control line or another. Will have to revist. I ended up using JB weld to glue the air director flap (so far so good). The advice to pull the inner fender was a lifesaver! Dashcap will need to be a later project but I like the idea of rewraping it with marine vinyl.