5/8" heater hose and can only find 1/2" fitting

Isn't this what you need? Let me know if it's not, because I'm about to order a set for my 273.

[ame="http://www.ebay.com/itm/64-69-Mopar-A-B-Body-Dart-Barracuda-318-340-Small-Block-Heater-Hose-Nipples-/400726978003?pt=Vintage_Car_Truck_Parts_Accessories&hash=item5d4d306dd3&vxp=mtr"]64 69 Mopar A B Body Dart Barracuda 318 340 Small Block Heater Hose Nipples | eBay[/ame]