Top Radiator Hose Collapses
According to what I see in the Stant application, 10231 is what you should use
stant.com/files/2714/0979/5243/Stant_Vintage_Guide.pdf
Page 106, I looked up a Dart because it was too damn much work to scroll clear down to the "Ps" LOL
Can you post what exactly that catch can is, brand and part no, or a link to buy?