Are you kidding??? With all that flex in my stock subframe.........I got tons
Actually, measurable travel up front is barely 3" and rear is probably a bit above 4".
I can gain travel if I relocate front sway bar above subframe like on the Penske/Donahue '69 but it hasn't been an issue yet with the 700 lb springs.
Bringing the hub out 2" with the spacer for the vette wheels may cause some issues due to increased leverage but I'm going to bring my Torque Thrusts out to Buttonwillow just in case.