Entry Level SS(MOD) rules proposed

[Geerhead55]

I guess I must be missing something. I've followed this "evolution" of the rules regarding this class for some time now,, counting the other threads that have dealt with this too, and heres what I don't get: I'm paraphrasing here, but you'll get my drift.
Rods: ANY length or type.Pistons: ANY type or pins.
Valvetrain: ANY cam or lifter-- under.904 & .700 max lift.
Intake: ANY cast aluminum available to the public.
Carb: ANY Holley "type" 750.
Exhaust; ANY header. Oil: ANY pan.
ANY factory rear end,,,, ANY factory automatic,,,, ANY this and ANY that. If that's the case,, then WHY are you joined at the hip to BRODIX heads every time this comes up? You've already established valve sizes,, why not put a maximum runner size,, 180, 200, 210, 220 whatever,, and let any, sorry, ANY manufacturers' heads play along? Is there a problem with AFR,, Edelbrock, World Products, Trick Flow, or others? Are you guys Brodix stockholders or part owners? It just seems when ever this topic comes up you've stuck with Brodix. I admit they have a fine product but why not open it up to the others?
Any cam could be Crane, Comp, Bullet, Erson, Elgin,, etc. etc.
Any intake could be Holley, Edelbrock, Weiand,, etc. etc.
Any carb "Holley type", is that a Demon,, Quick-Fuel, etc. etc.
I guess I just don't understand why this has to be a set in stone rule. If you guys are "in bed" with Brodix,, I get it,,, if not, then something stinks. I'm just looking for an explanation,, that's all. Thank you for your response.
Danny Durham