[mockingbird812]

It is human nature to try and place a process on something like this. Most of industry is very process oriented these days. Some things are process-able and some aren't. This wld be a tuff one - but if it weren't tuff it wouldn't be worth doing. There are indeed a ton of variables some of which are intangibles. But, I laud you for attempting it. Could be fun, and if nothing else gives you a reference point to perhaps compare one car to another whether you are buying or selling or just determining value. One thing I'll suggest is to not place a discrete $dollare$ figure for deductions which will be outdated the week after next, but use %percentages%.

That said, one of my favorite value-added things that I look for in a car is the story it tells. All of these cars have a story, some will never be known some are waiting to be unearthed. I like the thrill of the hunt to go back as far as I can on my car and find something the previous fellow didn't. It can be anything from the sexy, hi profile i.e owned by a celebrity or famous drag racer, to the regular joe stuff, but typical of how these beasts were used in the day.

Good luck!

Sam