Put the newly recored 4 core in it along with what I think was the OE 195 thermostat .
Figured if it was the OE the flow rate would be correct and it is a little experimenting to see how the 4 core does with a bit hotter stat.
Back to all metal for the radiator !
I think she was happy as everything went smooth.
Wife asked what I was gonna do with the old one (2 core aluminium and plastic- worked fine, but not right for the truck ).
I told her keep it, or maybe if someone here needs it - who knows.
Wife - why did you replace it if it worked ?
Some people get it, some don't- she is not a gearhead, so she don't.
Oh, well .