honestly....
It looks like you found a car to just restore and park....
if your going to do what you want to do to it, the value will just decrease and it will only be valuable to you and you only...just like me and my Z....who's going to actually offer me any money for my Z once they know what I've done to it or with it....nobody.
Just restore it, keep it, and don't drive it except to shows and you'll have something in a few years that is worth something. Remember your Celica, it was worth something once, but the natuaral elements took that value away from you right under your nose...and where did it go?
If you want to play...play around with something thats worthless or past it's limits for being worth something. Again...look at my Z...I took something that could have been mint, and I beat on it and beat on it, and now it's not even the same as when we bought it....it's still cool, but now it's been bastardized to the point to where other Z owners shun me for what I do or did to it.