Removing Lettering From Rail King Flat Car

I have several Rail King heavy weight passenger cars with Pennsy livery that I want to re-letter to "Long Island." I am afraid of ruining the plastic and the Tuscan Red paint finish with chemicals, so I am going to use this technique.

Rather than remove the "Pennsylvania" lettering, I am going to paint over it with Tuscan Red plus clear gloss, then apply "Long Island" decals. So my technique is to paint over the unwanted factory lettering with the base color of the rolling stock, then apply decals / stencils.

That could work as long as you can match the base color.  I haven't attempted the removal yet. I have done this type of removal before using two or three different methods.  I was just asking in case some one had done it successfully before.  A while back some one asked a similar question and one of the responses was about a WBB 44 tonner.  It was in PRR livery and @Chris Lonero, removed the lettering with a Pink Pearl eraser.  That answer couldn't have been better because I planned on doing that very same job and now I know how to do it successfully.