Welcome to the board.
The rarity is not all that rare but they are getting that way. Most have seen better days and are falling apart. Yours is really clean and a good stance. If you want to drop it you need to figure out how much of a drop you're looking for. 3/5 4/6 5/7? Look at other Blazers and trucks that have been dropped. Ask for what stance this is and it will help figure out how to do it.