I got a great deal on some bilstien shocks off a 3/4 ton avalanche (only 10 miles on vehicle). I did some checking before I bought them and the front ones are the correct shocks for a 3/4 ton pickup. I install them with no problems. My concern comes with rear shocks. The number indicated that they were designed for a 3/4 ton avalanche or a 1 ton truck. The problem is they are about 3" shorter then the stock ones that came off the truck. I still had to compress the shock about an inch and a half to bolt it on. Will this create an problems? I would like to use these rear shocks, but if it will create any problems I'd rather buy the proper size.

3" is alot. I would bet they will top out off road, or on pot hole filled dirt roads. Shocks that top out or bottom out can be destroyed very quickly. In the Jeep world this mistake is enough to rip the shock mounts right off the frame or axle.