318 vs. Slant value

The greatest value will be in assembling the parts necessary to build the car you desire at a price you are comfortable with. Once you speak of modifications everything goes out the window. A Harley-Davidson panhead with a $10,000 pink paint job and 24K gold plated spokes would be worth less to me than a well worn original. Others may disagree. Used cars are just used parts, buy what you need when and where you can find them.

If you are concerned about what makes financial sense, you should sell/scrap everything you have and put the proceeds down on a new leased Acura.

I'm a bit hostile to the whole "what's it worth" mentality. Takes cars away from those who want to drive them and put them into the hands of those who wish to park them to protect their "investment."