77 2.7 911S Fuel and Vacuum lines

[Moozak]

I am in the process of tracking down vacuum leaks and I've found a few interesting areas of concern. I did the vacuum cleaner test and found bubbling at injectors 1 and 4. I've ordered injector sleeves and o rings. I also noticed that some vacuum and fuel lines look really knackered. Should I do a "wholesale change"? If so, how much line and size of lines would I need (approx)? Cheers,

Jon