I agree with brjr51. If they're not leaking...don't touch. To me, a little too much work for one of those "while I'm here......" type of thoughts.
4 rubber hoses? Don't you just need 3? 1 for the back and 2 for the front?
Craig
My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear
My truck ....... Respect The Rust
If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.