302 Ford engine

[1931flathead]

My friend has a 1991 Ford in his car has a carb on it trying to find a camshaft for it he wants to go roller but no one can tell us for sure what cam will work for his block cause in 1989 to 1999 they use the same blocks we were told but in 1993 they had roller lifters most of the block were set up for roller lifters
So can we fit a retro fit cam in it cause it is the one he only can find that he likes

Couple pictures of the blocks one a roller block one a none roller one
First one is the roller one