Run Sunoco 94 octane in both cars - the 10.5:1 compresssion in the 65 requires it and I run 15 degrees of initial timing in the 87 and it pings on anything less. One advantage I have cost wise is, both cars are basically weekend drivers only and do not see a lot of miles during the course of a year.
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1965 K code coupe - numbers matching - restoration ongoing. 1987 LX notch, 5 spd, stock heads (minor porting) and intake, 65mmTB, 3.55's, ram air, pulleys, shorty's, 2.5" exhaust with cats 13.89@100.25
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