I would like to order some silicone hoses to replace the vacuum lines as well as some of the coolant hoses like the one that runs from the overflow tank to the top of the rad. Basically the ones that are showing/fairly easy to get to without taking things apart. Removing things like the battery, coolant resevoir and all that is fine I just don't want to take anything off that requires me to replace a gasket or something.
I'll probably be ordering online so my question is what sizes will I need to order and how much of it will I need?
Another question: I know there's 3mm vacuum hose but would the thick walled silicone hose fit into all the required places? Here's a picture. As you can see the thick walls make the tubing a lot bigger than normal.