As my buddy acat says, 130,000 miles is nothing in a 35+ year old car. Assuming it is a 1972, that works out to 130,000 miles / 37 years = 3,513 miles per year. Jeez, these things aren't Ferraris - people drive them - they don't just collect them. So an average of only 3,500 miles per year seems pretty low to me.
Coupe engines pretty much last forever. My 2800 has 180K on it, and still is pretty tight. And as acat says, the mechanicals are cheap to repair even when they eventually do wear out. It is the condition of the body that you need to worry about.