Don't consider too long or it will be gone!
Anyway, you say originality us important and if it is, and if you find one in good condition, you will find that, if the owner knows present values, you will spend some good money. Now, that being said, you are considering a 40 yr old piece, so in reality, it is more likely that there will be some problems, than not. If you have found one that you can inspect, and you find it in good condition, get busy and make it yours.
By the way, Maryville was home for me from birth until my 30's. Love the area in which you live. In-laws live outside of Seymore.
2000 390 Landyacht XL
1989 29' Excella
WBCCI #6673 jerry Hodge
Have no intention of arriving at the grave safely, but rather to skid in sideways, chocolate in one hand,throttle in the other, totally worn out and screaming
"WOO HOO, WHAT A RIDE!"