That is one sick Blazer! If you are looking to have a Cadillac ride, and sports car maneuverability, look no further than baggin' your truck. Check out the following sites for products:
Air Ride Technologies
SuicideDoors
If you need more info on the installation of a bag suspension, be sure to search through the Suspension forum of the board. If you look in my signature, there is a FAQ link, and it should contain a few threads about bagging your blazer.
Good luck with the suspension rebuild!