TUR0003 is a downflow radiator.
The core measures 36" high by 36.75" wide, 2" deep. It has a 2.5" inlet at the left and a 2.5" outlet at the right / bottom. There is no integral oil cooler and no filler neck.
It replaces 56 OEM and aftermarket numbers, among them PET20, 5777A, BHTH4102. Searching any one of them will find this part.
On radiators the inlet and outlet positions, and whether the unit carries an oil cooler, decide interchangeability more often than core size does. Two radiators with identical cores are frequently not interchangeable.