Radiator question

["Steve Rubano" <srubano@xxxx>]

I removed my radiator the other day and took a good look at it. Now I 
know that the OEM ones had Plastic holding tanks BUT mine, for some 
strange reason, has a BRASS tank (and soldered on not clamped) on the 
right (passenger side) and on the left (drivers) is plastic (clamped 
on). My question is this: Do/did the OEM's have plastic tanks on both 
sides of the radiator or a brass/plastic set up like mine? If both 
tanks are plastic then I think a previous owner had it rebuilt and 
they installed a Brass tank on one side? Very strange. Was just 
curious on this one.