Got a Belltech said was for 4wd. THe front comes with springs for 3in and a spacer for only 2in drop. Question is can you drop a 4wd 3in with just springs? Also will i need shims on a 06 Supercrew 4wd dropped 2 in front and 4 in rear as it should be leveled out. The cusomer service was ify on the phone. Thank you

 

Any pics would be great also thank you the kit is belltech 933