[Jeff Lee]

I took the average of the 5 road tests you previously posted (omitted the modified test cat with headers, etc.). The average was 14.33 ET. That sounds about right for the day.
I then averaged the MPH's, came out to 98.62.
For fun, I used the formula 1320/MPH = optimum ET. That of course is mainly used on a properly prepared car with tuned traction / suspension / clutch and driver. Obviously these test cars do not fit the bill but this demonstrates what we could do with todays slicks, clutches & suspensions and a fast shifting transmission.
1320 / 98.62 = 13.38 ET! That's a whole second faster "than the day"!

Now with the bolt on parts (cam, headers, intake, carb & slicks; "week #2" modifications), the 12.92 ET @ 107.86 equates to 1320 / 107.86 = 12.24 ET!

So if we could go back in time, we could buy a SC/Rambler for around $3,000 - $3,200 and drop another $500-$600 into it for bolt-ons and run very low 12's. Maybe even hit a high 11 with great air and 4.44 rear gears.
Day #1 (stock) = 14.30's. Day #14 (bot-ons) = 12.20's. Day #21 (gears) = 11.90's.

Not bad!