Fuel line Question, Replace hard line in tunnel with soft??? Options

[kfish914]

I know I may get a lashing for asking this but with a budget in mind. Would there be any issues with replacing the hard plastic lines with rubber lines? I know I could use electrician's fish tape to pull it through into place. My worries are the grommet area (where the hose would pass through the body panels) rubbing or kinking the fuel line. I am exchanging the current 1.8 four, for a 2.7 six.
Any thoughts?

[kfish914]

Thanks guys for all your responses. Yeah i know I am putting in a 2.7 but I bought it off a local guy in the nieghborhood who did a 3.2 conversion on his 911 and his wife wanted the engine out of the garage. I happen to be at the right place at the right time and picked it up for $1800. I know you are all thinking it needed a lot of help, but really i had heard it run the summer before and it sounded good. I did take it down and rebuild it just to make sure. It was pretty clean besides one cyclinder. Yes I was going to run one line from the tank to the back and then one line for the return less connections to leak. I am able to pick up the new updated fuel lines at a local NAPA store for 1.59 per foot. My worries were that it running along the tunnel and across a lot of metal "edges" that it would cause cuts into the line and POOF flames everywhere. Thanks for all your input. I knew that I was setting myself up for a lashing but I also knew that you guys wouldn't let me down with some great ideas and advice.