I am worried since its not a flat surface that it will burn through the paint and get hot spots easy.vinyl zapper is what i would use but you will need a bunch of wheels
it might do that. you would have to test but when ever i do stuff like that i let the customer know this could happen and clear up that you are not responsible for any damage during removal. you might even want to get them to sign a waiver. doesn't matter what method you use you always risk some sort of damage or discoloration to the existing paint. i saw someone mentioned a hot pressure washer, that might work but also mentioned and has a track record of working is a steamer (wallpaper remover). very rare that removal is easy especially when the vinyl is in as bad a shape as what you have thereI am worried since its not a flat surface that it will burn through the paint and get hot spots easy.
that's my weapon of choice3 words...MBX Vinyl Zapper
If you buy the hub will it fit in a standard grinder?This also might help.... ABN Decal Eraser Wheel.... most auto paint stores have similar remover wheels to put on a drill....
ABN Decal Eraser Wheel Pinstripe Removal Kit - - Amazon.com