I bought a $600 alum rad a few years back (still in the car) I was completely dissapointed after installing it as it did not drop the temp one degree. After reading the article in last month's HPP come to find out alum DOES NOT dissapate(s) heat any faster or better than copper/brass. According to the article just the opposite is true. I have since rounded up an OEM 4 core w/ Harrison tanks and will be installing that soon as IMO the original type look much better. My alum rad has already been sold as soon as I get out and shipped...