Money vs Horsepower

A fast rate of lift Hughes flat tappet and 1.6 rockers will come close to a roller, I did it. However I have a bigger roller in my car now but the duration at .050 numbers are very similiar. You just can't get the fast rate of lift with a flat tappet as you can with a roller. Going in a race engine with a big cam, it's a good thing. Going in a street car with a smaller cam, probably won't be noticed and more than 3 times the price tag. So in my opinion if it's going to be a smaller cam say less than about .650 + lift it's not worth it.