im guessing my brake booster is failing, its stops great until i get to about 5 mph range and the booster gives out and i hear engine vacuum and engine starts to stumble.
im getting engine vacuum right off the manifold runner, i put a brass fitting in place of that weird bolt im still not sure wut its for.
so if its failing wut are my manual options? is the MC different, and where could i get the push rod if i were to take the booster off?

If the booster is not hissing the whole time the brakes are on it is likely just the check valve. A failed check valve can cause what you are describing.

I really am not sure if the check valve is on the booster or inline on your car, is it the funny bolt thing that you removed?

I would try getting a new one and not one of the cheap chinese ones from the "help" section. A factory part would be best an I would think a dealer would still have them, probably superseded by a later part number.

Even a good used one from the junkyard might be better than an inferior new one.

thats what i was hoping, the check valve is at the booster