You could zip-cut off the crimped aluminum hose ends to replace just the rubber hoses and use hose clamps... You could also get new lines from Rock Auto already, but they won't be any better than the crimped originals.I have a 2014 T&C with leaking transmission oil cooler lines. As a hobby, this year I started doing a lot of my own auto repairs, so I was thinking of replacing the lines myself. Surprisingly the lines are very accessible and it doesn't look like there's too much to the job.
I have always used bulk 5/16" fuel injection hose from the auto parts store. It never leaks, no cracking and the hose doesn't get soft.
I have only ever found trans cooler/power steering bulk hose in 3/8" and 11/32".