33" tires on a 1994 4Runner?

I have a 1994 4Runner with a 22RE engine, a front 2" suspension lift, and a rear 2" body lift. I currently have 31" tires, which have worked well. However, they are getting worn. When the time comes for replacing them, I'm giving thought to bumping up to 33" tires to provide a bit more ground clearance for my backcountry trips (there should be enough space in the wheel wells to handle the larger tires). However, I don't know if going to 33" tires will create issues or problems, or if such a move requires re-gearing or any other work.

Any thoughts, comments, or suggestions will be appreciated. Thank you.

 

I'm thoroughly confused as to how only the rear is body lifted? Body lifts lift the body off the frame of the vehicle using a spacer. I'm assuming the rear lift is either an aftermarket spring or spacer on top of the spring.

 

Thank you for your reply. I may be using the wrong terminology. The final result of adding what is described in the accompanying Old Man Emu attachment is that an extra 2" of ground clearance was achieved in the front of my 4Runner, and the body was lifted 2" off the frame in the rear (which eliminates the rearend body sagging down when the 4Runner is fully loaded for backcountry travel). The ground clearance for the rear differential was not increased by the rear lift.

I've also attached a couple of pictures of my 4Runner with the current lift and 31" tires, if that helps.

 

It should be torsion bars up front and coils in the rear to achieve the lift. I wouldn't go 33s without a re gear with the 22re. I would go 4.88s.

 

Hello, and thanks for your input!