if i do a 3-4 drop will i have to move anything like braklines or c notch frame? im new to the blazer so any advice wiould be great.

How about keeping your questions in one thread... Double posting is against forum rules.

*Thread Closed*

Those wishing to respond can do so in his other thread:
2001 blazer lowering questions (http://www.blazerforum.com/forum/showthread.php?t=30226)