Roller lifters

I'm building an 87 318 for another member right now and it's a roller cam block.... So they were roller by 87 for sure...
I have a 1984 318 roller block, .020 over, steel crank, 340 cam, 234 closed heads with a performer on top. I also just got an '85 roller motor, verified, as a core from the ram charger I built a teen for.
Both flat tappets from the factory, but still roller provisioned blocks.
Right now there is a 87 d250 in the yard with...a roller block. Short blocks cost around 200 here.