The radiator will help with your temperatures but I would make sure you have a better fan to go with it to make it worth while. Because the radiator is thicker the fan needs to be more powerful to get the proper airflow over the cooling fins. The FAL bolt on fans are great but a little pricey. Most electric fans push/pull more air than stock. Just dont use the little pull through radiator tabs or zip ties. They do damage the radiator. It only takes a few minutes to make some kind of bracket to bolt up the fan. The fan does its job much better if it has a shroud as well. My H22 never goes over 185 degrees with a stock EG radiator and a 12" electric fan that kick on at 100 degress.

I would try to get some heat out of your engine bay if you can. It will help control the temperature. Put some heat wrap on your manifold and downpipe or pick up a heatshield or wrap for your turbo. Every little bit will help you.