I had the same questions several years back, one of the employees at Crane Cam had a stroker BB in a 1969 Road Runner that they used as a add for the one lap around America race several years in a row. That motor had, according to Crane, 77,000 or so miles on the original bronze distributor drive
The reason that discussion occurred is I was looking for a two piece(stock oil pump gear on the front, solid roller biilet the rest of the cam) cam core for a solid roller street cam project
Crane had them for the Ford and Chevy motors of course but not any our brand