Newbie resurrecting a 914: I have questions., 1973 914 being brought back to life after 27 years in storage. Options

[Portia]

Hello, everyone! I am new to the forum, and to 914s. I just dragged home a 1973 914 1.7L that has been in storage for 27 years, and not started during that time. (It was owned by one man since 1974.) It is in need of inner rocker replacement and door sill/jamb replacement on the passenger side as well.

The goal of the project is to make it safe and get it running while keeping it as original as possible for as little money as possible.

Last night my husband and I pulled the gas tank preparatory to replacing the fuel lines. The car was put into storage out of gas, fortunately. The tank looks good from the outside. Should we get it boiled out and sealed, or is this an unneccessary expense?

If we don't do that, I will probably use POR15's cleaner and degreaser with a quart of hot water to clean it.

Photos:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i603.photobucket.com-17396-1401031248.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i603.photobucket.com-17396-1401031249.2.jpg)

Tank:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i603.photobucket.com-17396-1401031249.3.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i603.photobucket.com-17396-1401031249.4.jpg)

I'm sure I'll have other questions as the resurrection continues. Thanks! (IMG:style_emoticons/default/bye1.gif)