I bought a koolflow from Summit ,when my original broke, didnt change it much at all...a 3 core all aluminum radiator did it for me...dropped another 10-15F.....I had done lots of things to cool mine over the years ( fillers, gapping the impeller, timing , thermostst, carb settings,etc,etc) , little by little got it down from running 230 in summer to 200-205...now 190-195