TurboDart,
We're talking about 1968.
In Stock Class back then, you were limited on any 'up-grades', not like today.
* 7" Slicks were Maximum-Width
* No Lightweight Wheels
A 'Bone-Stock' 383 Road Runner w/3.91 Gears, tweaked with a 'Performance Curve' and
Carburetor Zip-Kit, and 7" Cheater-Slicks - could just about make 14.00's @ 100 MPH.
That is a Fact.