Need help keeping up with C6 Z06 & Porsche GT3 on Road Course

One of the most important aspects not mentioned yet is DRIVER EXPERIENCE........Gotta have the seat time.

If I remember correctly the owner of the red 68 Valiant above is a driving instructor, has a lot to do with how fast that car is.

Extremely true!

And the older cars are going to be tougher to drive as quick as the new stuff even is they are equal capable cars. Experienced driver in new sportscar might be as fast in older modified car. But inexperienced driver will probably be much faster in newer sportscar.