I am in the need of a new one... going to be doing it my self. yes i know (a bitch process) but i am wondering if i can use a del sol or any other civic heater core in MY CX? the guys at the local part place said only mine.. but i feel their being shaddy bout it..cause my heaterocre from them is $225 (outragE!!!) but yeah.... other civic heater cores fit in mine?? or no?