Installed New Radiator on my Dart

I'm having cooling problems cooling my ride . Had my rad cleaned and flow checked , no difference . Was quoted $380 to recore mine . Crazy ! Aftermarket rads flow better and are lighter than stock . That being said , no matter who made it or where you bought it , or, how much you paid for it , if it doesn't bolt in it's n.g. There is absolutely no reason why radiator makers can't make radiators to fit your vehicle . They are just lazy and don't want to engineer parts . It's a "one size fits all" mentality . The catalog stores have the same ideology . I have complete empathy with you . FYI; there is only one radiator shop in the whole state of New Hampshire and he is retiring this year . Bummer !