I think with an auto that Drag Radials will work. My car has stock 40 year old leafs with an extra main leaf added, worn out shock front and rear, 560 coils, roller perches, rod ends on the strut rods, 1.125" swaybar connected and spherical bearings in the lca's. It has been 1.58 in 60' so far and 6.93@110.45 in the 1/8. Here is a 6.94
6.94@100.45- Video