Those are nice.. pricey tho. I really didn't mind trimming the flange and in hindsight, I wish I would've trimmed mine all the way to the core support. I still might. It makes for a better fitting LX radiator.. I had to roll the flange down to get the radiator to fit. I just cut the flange flush, making the frame rail a square 90 degree edge and then just welded the corner seam together. It's not bad. One advantage is is oem fit, so if I ever have one fail, it's a shelf item.