Rear Brake Hardlines

[68BNUT]

Hey I have a 68 camaro with drums all around and im doing the 4thgen swap on the rear brakes, Question is what did you all who have done this swap did you just buy new hardlines and flex hoses or did you just cut the existing hard lines back and re use them??? If you did replace the rear hard lines got any part numbers for the lines steal and the flex ones?? anybody make a kit for this swap??
THanks for the help in advance