My 1965 Caliente only has around 189,000 miles on it, but I had to have the motor gone through at 150K because this junk they call gas had eaten the valve seals out. The transmission and rest of the motor was still almost like new. I do need the linkage fixed but it goes down through the steering column and I won't be around long enough to worry about it. That is my favorite car and used to get great gas mileage until they screwed the gas up.
Ron
