yeap the most he can do is the 3.5" with the 1" diff drop

but i have heard of people having problems running with a 2.5" lift and the cv boot ripping

if i was going to do that kind of lift i would crank the coilover to 3" and use the 1" diff drop so the cv angles will act like it is only a 2" lift
then for the extra 1 or 2" lift i would use a body lift