here's my story. I have a '69 S.S. 396/350, low miles show-car; which I love. I also have a '68 that is being totally restored (ground up/bolt nut) The cool thing about the '68 is the original sheet metal. it is straight as an arrow. I had the original rear-end taken out and replaced with a 3:73, mosier gears, radical "racing" stuff according to guy doing my motor. My motor is about done: 383 stroker, brodix alum. heads. I mentioned my '69 S.S. because I am thinking about making my '68 a pro-touring car. So, I'll have 2 different kind of cars. I come to this site and really, really dig the modern stuff being done to these 1st gen cars. I love stock/original very much. So, I feel a little "guilty" about adding modern stuff to a 1st gen. But, this car is a perfect canditate for pro touring. the guy doing my motor makes his own line of motors and I'm thinking about using the 383 that's almost complete in a different project later on; and going with one of his all aluminum 427s. My question is this: what are the value of these type of cars versus restored stock/original? I know it depends on what's been added to the pro touring car, but in general?