Fixing Leaks (oil and coolant)1981 300cd

My 1981 300CD has some leaking issues. I have traced the coolant leak to the fact that the radiator has bulged along the upper edge and is leaking fluid under pressure from the joint between the tank and radiator.
Are these repairable? What else uses the same radiator or one close enough that I can cross reference to try to find a good used or inexpensive new rad?
I have determined that it appears my oil cooler lines are the source of my (numerous?) oil leaks. Are my lines the same as the turbo cars of the same year? Are they the same as earlier non turbo cars? Does the CD have different lines than the 240d? What about non turbo sedans? Again I am just trying to figure out if I can find some decent used lines, which new lines to buy or if I just need to go and fabricate some oil lines with fittings and braided hose.
THANKS!

Forums

Chassis Model Number