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.