You still have the issue of the age of the lines. I had a trans cooler line split going down the highway in my 1991 Classic last week. When we bent it to make a loop back to make it home it lasted another 40 miles before splitting again. Easy fix though.
'73 SeriesIII coiler,"The Goat", Daihatsu 2.8TD,Santana,Ashcroft,ARB's,etc., now SOLD