I don't mind cutting stuff. The 24" later radiator is the route I probably will go. I just wanted to see if the increased "technology" of the of dual-pass crossflow design was superior enough to bother with CONSIDERING these LS Swap Radiators for Chevelles and stuff BECAUSE they seem to be close to the right size and configuration for not that much money.
As far as mounting, have you guys seen how radiators are mounted in new cars? You could zip-tie it in place and it would probably be as secure as a early 2000s Kia radiator. You don't need any brackets on the radiator itself. You could bend up some steel "L" shaped brackets to cradle the radiator on the bottom, welded to the radiator support, maybe with rubber insulators between the bracket and radiator, and then up top you could devise another set of "L" brackets, and bolt it to the radiator support on the sides with nothing more than a simple tab on top. This would mean in the future you could just unbolt the top tab, remove your hoses and just slide the radiator out if you had to remove it. It just depends on if you care about drilling and cutting your radiator support (which you have to do anyway for a 24" radiator), but my philosophy is if you can cut it off you can weld it back on.