Just go to your local automotive parts store and ask for c.v boot grease and universal clamps they should sell the grease in a seperat tube.rather than buying a new boot kit.
Kevin @ Rapid Revolutions has some Ams oil synthetic which is real good stuff it is water poof so if you do rip a boot the water will just drian out it will not mix together like some and take out the cv joint
I lost one on the front of my rubi, I refilled it with a marine grade grease, and used a heavy black ty-rap to replace the old clamp, been like that for 2 years now and no troubles.