Tapper to roller cam conversion

I would say that these days the chances aren’t as good as 50/50 that you’d get a long service life out of a bronze drive gear.
For a bracket car, if it only lasted a season or two it’s not the end of the world.
On a street car, they can get pretty ugly in 1-2000 miles.
The key word being “can”. Not every one will wear right out, but for sure……some will.

I recommend the melonized gears for the street applications.