Hey Everybody! Just bough an 86 Cutlass Supreme 6cyl with NO AC. Looks like I need to replace heater core - it is leaking bad. It appears to be leaking down the frame,so far no leaks inside the car. It looks to be not that huge of a job compared to others I've seen, no AC to deal with. Can anyone give me some tips on how to replace it? I've looked on you tube bu can't find anything and have a manual which helps some but I know you guys are the real deal and know what you're doing so thought I would come here for help. Thanks!