If you're looking for more internal memory on your V, give this a try.I installed this a few days ago and everything is still running smoothly. I got a boost of about 60 megs on internal memory. Only drawback is that it replaces the LG boot screen with a Sprint boot screen and takes a little while longer to boot. It does not change any other boot animations.
Optimus V -- Dalvik cache to /cache
Optimus V -- Dalvik cache to /cache