You would definitely benefit from upgrading your radiator! Todays aftermarket radiators & electric fans will give you about 20 - 40% more cooling than stock. You should check out the all aluminum radiators (many brands are available) from C & R racing @ www.crracing.com. Others are CWR, Fluidyne, etc.

But before you go to all that expense, you may want to check out your thermostat and waterpump. Have they been replaced recently? If stat is sticking, it will make your engine overheat so check out the thermostat 1st.

Just my .02 cents worth!

Scott.