I love these old cars as much as the next guy but I guess you have not kept up on the latest NEW cars available. Mustangs, Camaros and Challengers. All rear wheel drive and available with a varity of engines that will compete with the factory engines of back in the day.
We now have 6 cylinders with 300 h.p. and 6 liter engines with 450 h.p. from the factory. The only real differences are that many of these cars have traction control and varible timing that limits the tire ripping power that the old torque monsters had. The up side is that it puts more USEABLE power to the road making for a faster car.
When you do the math of what the working man was making back in the day and what the cars cost then verses today, it is about the same.
You can buy one of the above cars and drive it daily, take it to the track on the weekends, gets better mileage then the old cars, more comfort, more luxury items and have factory warranty.
The way that I see it, things have come full circle back to the 60s plus.
This has actually hurt the old car market because today you can have all of the above PLUS any new car nealership will finance these cars where it is much more difficult to do on the old cars.