DING DING DING SOUND THE ALARM!...

Plan on talking to Mike at B3 about any roller rocker setup you choose. I've been told the Speedmaster/Procomp have the most problems with geometry and need the most correction.
The springs are the difference between hydraulic roller as opposed to flat tappet. i.e. Edelbrock 5845 that they use for performer RPM heads set up for hydraulic roller have 150lbs seat @1.80.