Kraegen makes a split boot now for like $25. Quality, reliability, who knows, not me!
Napa sells driveaxles, remanufactured, for $67, ready to install.
http://www.napaonline.com/masterpage...d=8&SubCatId=8
If you install the split boot is still a lotta work, you have to clean inside the bearing etc. and there is no guaranty the boot will hold. If you install a regular, solid boot its even more work than changing the drive axle, a lot more. And its already making noise anyway.
I'd go for the remanuf driveaxle and change it.