A turbo radiator is LEGAL. However, in the spirit of our group, in Nor. Cal., it would be a serious violation for you to install one on your car.
That said, the turbo radiator is about 1" taller than the stock one. It requires the bottom cross piece to be dropped. I did mine with longer bolts and spacers. I also fabed two al. pieces, for each side, to add shear strength to that area. You might be able to find a turbo bottom piece from a salvage yard. I tried but could not find one so I did it the hard way. I can not get any pics as the cars are up there. You can look at what I did at Infineon.
By the way, the turbo radiator uses a different bottom hose to accommodate the lower outlet. I have been advised that forcing the stock hose onto the turbo radiator is not an ideal solution so I put a new turbo one on for better fitment.
Moving the oil cooler away from the radiator is also a very good idea. A PITA, but a good idea. I have mine on the right side and get air to it from the turn signal hole in the bumper and the fog light hole in the valence. You cut the plastic out from the back of the fog light hole for air flow. I have some ducting to force the air through the oil cooler in the same way that the radiator has ducting to contain the air and force it through the radiator. Make sure your radiator baffles are all in place as part of the radiator change.
Again, you can look at my arrangement at Infineon.
Big Dog, Lil' Kat, Piper and the Mothership