Re: 63mm TB
Is this even an available size from Ford or elsewhere? Seems to me that maybe Sho Shop simply bored out a 60 and made a new plate for it. In terms of wanting to offer something for sale that would sure be a lot easier than having to fab up a new cable or do more involved mods to make another tb work. Chances are they didn't know the 65 could apparently be made to work so easily.
Just my $0.02...
dan