How to figure out what I have ?

[swamp rat]

I got to agree with the reply about the front spacer blocks on the front, their a bad idea and not too safe, lots of side and front to back stresses placed on them and if the u bolt comes loose or cracks under the stress they can pop out and cause a crash. Your front springs look stock, i would recomend ether pulling the front blocks and or replacing the springs pitman arm and shocks with a kit from ether Tough Country or Skyjacker Soft Ride.