I try to not to toss any original parts out when they are replaced. As I write this I realize this may not be 100% true...brake master cylinder, clutch master cylinder...but I digress.
Definitely holding on to the original radiator and fan assembly...but do you think keeping the (probably original) heater core in a box makes any sense? Thanks. I don't plan on selling the car but want to make sure my grandkids can make a bundle one day if need be ;)