I am running a BC downflow on a +.030 340. The temp. dropped big time.HUGE improvement. Also 2x12" Jegs fans. Fit was great. The only thing i didn't like was where they cut the rad. to length it was choppy. Unfinished. For 600 bucks it should have been cleaned up. You don't really see it though. I hear crossflow rads. cool better. But had fitment issues with my application.