ReadyLift Suspension Leveling Kits

[SBJ420]

Hey guys,
just ran across this ReadyLift Suspension Leveling Kits.
Leveling Kit, Torsion Bar Keys, Front, 2.25 in. Lift, Ford, Kit.
http://www.summitracing.com/parts/RLS-66-2020/

My question is, if I install these Torsion bar key lifts in the front can I also do a Torsion twist 2"?
that would make 4.25" lift. I am not sure how the keys work so I could be sadly mistaken on this...

 

[YountExplr]

no you cannot. the keys and the TT do the same thing and your CV angle will be too great. Only way to get 4" out of the front is a full lift kit.