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.

http://www.ebay.com/itm/64-69-Mopar...Parts_Accessories&hash=item5d4d306dd3&vxp=mtr

This what I had to use. Which has the 1/2" hose end and is too small.

http://www.summitracing.com/parts/PRS-1061