I believe that most currently-available pin stripe tape probably comes from a few real sources, which everybody else re-sells. Other than perhaps 3M itself, which should be the gold standard, as I recall.
Check your local body shop paint supply vendors.
ALSO, contact some local new car dealers to see who does their tape stripes for new or used vehicles. Most of these vendors service all makes and probably have more variations of what they can do. Being independent contractors, they work for themselves and might be able to replicate what is needed.
CBODY67