360LA roller rockers. Which ones?

wellllll I guess I got ahead of myself here fellas.

Looking on comp cams site, they do not specify that I need an adjustable rocker arm set up. The 20-223-3 on up requires them with their premium lifters.

So I think it would be foolish to spend $500+ on something I really do not need just to gain a few hp??? Or am I missing the bigger picture here?