1070 swinger 6cyl. Drums to 72 4 door disc

UCA's are the same from drum to disc so you can use your old ones, but the LCA is different, you will have to buy a pair for a disc car, but they are readily available. No difference in length, all of the stock items will change right over. Also, I hope you got all the distribution blocks with the purchase, and of course you will need new lines for a disc brake car, and a dual piston master cylinder for a disc brake car. I just did this swap on my 66 and all went well. Good luck with your swap, Geof