Thunderroad,
The radiator you have probably (99% chance) fits
a 64-65 Tempest/LeMans/GTO as all of them have the top hose on the passenger side. Also the new
radiator you have is for a MANUAL trans config.
If you have an auto trans you need to tell Chris
that too so that he will send one with the trans cooler installed in the lower tank. Good Luck.
Tom V.