I think it would make sense to put a disclaimer on the page. Something like...
"Note that these are modified PC floppy drives. They fit original A600 and A1200 cases, but might not fit all tower solutions. Contact us if you are unsure."
Personally I have no clue on how to modify a PC drive to work as amiga drive, and have two kylwaldas that I use . is it a simple operation?