WOW... that is really sad news! I love Walker rads & have one that cools down my BB Nailhead! 4-core, brass tanks, copper tubes & it weighs a ton! I paid an arm & a leg for it but even in the scorching Tejas summers it *never* overheats! After taking it out of my truck to use for my coupe I had it totally cleaned out (which you wouldn't do to a alum one) & it's back in action! Another really good one bites the dust!
In case anyone didn't know, Johnson's Hot Rod Shop bought everything Walker and will be producing new radiators using the Walker tooling, designs, and techniques under the Johnson's Radiator Works name. According to their Facebook page, they should be up and running anytime.