Oem header's or not ?

Hi the master's

well it's for the exhaust of my Dart A body , i desire replace my actual full-length by some oem iron cast header .

For Dart Abody on the web i can see this ...


.... and here in france i can have this ....



Can you confirm the compatibility of this second parts for a Dodge Dart 70' with a small block mopar 318ci and hydraulics steering box ?

Cordially , tof .