Roller tip rockers?

Alright guys and gals, probably abit of a dumb question but I can't seem to find any definitive answers online. I'm currently building a 318 with a set of milled 360 596 heads, mostly because it's cheaper for me to get the 360 heads milled down to desired cc than fitting larger valves in my old 675's. With milling the heads i'd feel alot more comfortable with some adjustment in the rockers and ideally roller tips for less friction in the valve train but to make it more budget friendly do aftermarket rockers fit the standard rocker shaft or do you have to buy the entire kit with shafts.

Thanks