Help! my rear end rides like a trampoline.

[Aarons72]

So I have owned this 71 GMC burb for 2 days...I have never had a ride with rear coils, I have always had leafs...so anyway, the back of my burb just bounces all over the place...up and down...side to side a little...it feels like the springs are crazy soft and the shocks are practically sideways...so on a tight budget what do you suggest I do to make it ride better? By looking at the picture what do I need to do to make things ride right? I know there are some products out there to correct lowered rear suspension like this but I dont know what they are called or where to get them. I can only spend a few hundred max.


Thanks! Aaron