No problem here, I'm switching because I plan on doing it all - road coarse racing, drag racing and lots of 360's (on and off road). For my application ball bearings are not best suited because of the higher side loads involved.
Car came with ball bearings when I bought it so they need to go. 
Gotcha, thanks!
With my current motor, 360s won't be an issue (LOL) so I think i will be ok......
I guess I will find out...LOL. The way I see it, they wont physicaly self destruct in an instant......wheel bearings, when they go bad, start making noise etc....so I figure its worth a shot.
Like I said, worse comes to worse, I slide the old axles/bearings back into the setup.
The biggest reason I wanted to try them is because of the lek I was having....I thought that maybe my setting of the bearings could be one issue.....so this way I rule that out. So far, about 700 miles or so and no leaks. Crossing my fingers.
