Stock Rocker Shafts VS.

71Duster said
Will I notice a huge change/difference in a mild 360 from stock rocker shafts to racer brown rocker shafts?

I dont think so!
Are you running a hyd cam? You would need to change push rods too and I think the $$ is spent better in other areas of the car.

Rollers are good but the are really for those whom really need them as a result of load engine type etc..

my 2 cents..