Just added my vote: I took off the front Isuzu badge and rear lettering this weekend.
I used a blow-drier to warm up the front badge and plastic knife to remove it, with some acetone to remove the residue after I took it off.
Rear lettering came off even easier, I used the same plastic knife to pill off some part of each letter, and then just pulled gently.
No "ghost" marks after washing, even though I keep my VX outdoors for over 6 months.

Sam, send me an email if you still want the Isuzu lettering from the back: all letters except U are intact, and that one can be put together so it won't be noticeable that it's 2 peices now.