Hey guys, thought I'd chime in here to help straighten some things out. First off, a 2 row radiator and a dual pass radiator are separate things. The 2 row radiator means that there are 2 rows of tubes inside the radiator, because the radiator is thicker than stock. The dual pass radiator means that there is a plate inside one of the end tanks, forcing coolant to run through the radiator twice, allowing for better cooling because of the increased time the coolant spends in the radiator.
Also, all of our products are designed and engineered by our team of in-house engineers here in New Castle, Delaware. We ensure direct fitment with no modification necessary and offer a 100% guaranteed lifetime warranty on all of our products. I would be happy to answer any other questions you might have.
Thanks,
Tyler