I agree with you and thanks for the recommendation on the promaxx heads, seem to be decent. Just need to decide scat I beam or speed master hbeam rods now! As far as head CC's go my options are 65cc or 62cc from promaxx
I beam is a hair lighter than an h beam, on average.
I've run h beam, very strong, they're typically used for big torque motors or pulling. You can use either in something like this.
I beam would be fine.
They're closed chamber and can be massaged/softening larger.
