My car has all stock floor pans and frame rails.I like the ultra link because the bottom bars being all one piece works like a anti roll bar to.My car is 3,200 pounds with a true 10.5 tire and has been mid 1.20 60ft.
3120lb, small block, 10.5" tire, NA, through exhaust, full int, WITH 83/4 REAR, 9.0 at 150mph
