oldblue

i've had the zuk mod for a while now to clear my 33s. it helped raise the truck, but it has no flex. so looking to do something else. i liked the zuk mod because i did it for $10 from junkyard jeep springs. what about using longer shackles? what size shackle would i need for a 2-3" lift? how would that ride and flex? what about an add a leaf? i know the best option would be new leaf springs, but i just had my first son, so money on my toy isn't money well spent. i really am not worried about ride quality, its only my trail truck and junk hauler. just want better off road performance.