the first guy who got one... and possibly have a radiator fetish that i just found out about wrote this about them
"Yep, and all going well it will have it's first track test this weekend. The car was running mid/high 90 degree temps on the track previously. I am hoping to see low 90's, hot enough to keep the oil clean and cool enough to keep me happy.
Some specs on the core. They are twin core not triple, but the cores are about 10mm wider each so the same effect as three rows (maybe better, less space is wasted between rows) The fin pitch is about the same as the stock core but the tube pitch is finer. There are ten extra tubes per row.
So the tubes are about 50% bigger between the two rows as the stock core and there are 25% more tubes. They should be a significant boost in cooling."