Heater core started leaking, reminders/tips how to remove box?

RedFish said
DL a factory service manual is the best I got. 68 thru 72 a-body all about the same

Thanks, I found a better manual. One hose is 1/2" and one is 5/8". Looks like it's reminded me how to remove the heater box, somewhat simple, easier if the glovebox is removed for access to disconnect the cables and other things.

This place sells rebuild kits:
Mopar A Body 67-72 BASIC NON AC Heater Box Rebuild Restoration Seal Gasket Kit

At this point just need a recommendation on a good quality heater core.