not go with that radiator. On my old TT, I had the 1st or 2nd gen Howe and found that the end tanks are a tad wider than the core. What this means is that the end tanks touch the top of the radiator support making it look like the radiator is sitting away from the upper support area. All in all, the design of the Koyo makes more sense, fits better and I have the 2.5" piping w/ no issues.