JB weld or solvent resistant epoxy

[prostreetC-10]

Got a killer deal on an aluminum radiator but it received some very minor damage during shipping. It's on the motor side and I'm thinking about just repairing it as apposed to going through the hassle of sending it back and all that is involved. I will be compensated for the inconvenience. There are a couple of very small tears in 2 coolant channels that can be reshaped with easy and sealed up. I have used JB for years and years but have recently been using epoxy on my carbs for sealing well caps and base ports. It's hard to go by the labels on a lot of this stuff because they say things like this:

Great for:
metal
wood
aluminum
plastic
toe nails
hair extensions
flat tires
broccoli and cauliflower
and on and on


Was just wondering if one might bond better to aluminum than the other. Thanks!