hey just thought id let you know that in peterson's 4wheel offroad from 4 wheel parts whole salers you can get a 3 inch suspension lift with shocks for a little over $300. you will get really good flex that way. on the solid axle trucks with 3 inch body lift and 33's the tires won't rub when fully compressed. but if you get 3 inch suspension lift it flexes that good the tires will rub the fenders real bad. i noticed this on my truck i drive. i have one with just a body lift i use for a feild truck and it flexes real bad. so the shackles won't help much except for letting you put on a little bigger tires