John - Perhaps instead of soldering on that radiator and risking messing up the upper tank solder seal, maybe you could form a couple of hangers similar to the originals and adhere them with JB Weld??? Just a little outside the box thinking.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)