Im more than aware of what re ground cams are and one reason why i wouldn't consider it is because of what CW had to say about the matter.
"The only ways to regrind a used cam with higher lift are to reduce the base circle diameter, needing much thicker shims, or to weld the cams up and regrind, which AFAIK, is only possible on steel cams, not chilled cast iron as the stock ones are. Reground cams can be very iffy, depends how well they are done, and how the heat treat is then done."
Another reason is the owner of TTC is someone i wouldn't deal with either
I did A LOT of research years ago about NA-T conversions and almost took the plunge of a power build myself but pulled out due to the cost it would of took to get there.