what you want to do is be gentle when you remove the old hoses,you want to take a straight edge blade to the hoses where they back up to the firewall ,and slit them ,so as removal is very easy .You don't want to be yanking on it (the intake and exhaust tubes of the heater core ) be gentle ... Also when you put the preformed hoses back on put some dishwashing lotion on the inside of them (sparingly) for ease of sliding them on (gently) also ,,intake side should have a restrictor inside of the hose! This backwashes the pressure (so as no to destroy your heater core under pressure) see if the have police heater core hoses ,if not there are a verity if the hose you buy does not have it .. like a small socket that you don't need any more ,or a fat washer that will slide into the hose (you only want to restrict the true diamerter a bit ) this is why many mustang owners replace their M/F heater core ,cause they don't restrict the intake hose !! Anyway take your time do it right ,think about it ,and set it up trial wise before ,go easy again on those tubes ,and make shure you have new hose clamps ,and a 8 to 10 " common screw driver to get the clamps from the side (firewall) good luck ,Michael
