Where can you find information on cars older than 1990?

What is your question?

I need information on estimated cost and/or time for cooling system questions on a 1966 corvette such as installing radiator hoses, water pump, heater hoses, thermostat, etc.?

What makes this problem better or worse?

Not applicable

How long has your 1990 Chevrolet Corvette had this problem?

Not a problem yet but hoses getting old and weak.