I was going  to put the 3" calmini suspention lift on my samurai  but they are on back order till the end of the year,hellcreek has some springs that give 4 1/2 inch lift so my question is if I  go with the hellcreek 4  1/2 springs will a 2 1/2 inch drop pitman arm work for the steering? thanks Mike

It should, but at that point you might want to just look at switching to a High Steer setup from Sky Manufacturing.  You are running at pretty much the same hight as a Spring Over lift only with stiffer springs and receiving less axle wrap. 

Defiantly high steer!

Amilla