Speedmaster Rods, can i trust them?
I wouldn't hesitate to use those rods.
I grind three reliefs on the rod's big end chamfer on every engine I build on V engines, where the rods are paired. If one rod gets trapped against the crank cheek, it's oil can escape & fresh oil can enter the journal.
That metal is extremely tough when grinding it & you really notice the difference, compared to how easy it is to grind factory rods.