Hi guys,
I have a 1977 datsun b210
I live in the U.S.

I am trying to find out what i can take off of the carb, headers, and intake manifold.
I wand to get rid of all the old e.g.r. stuff if that is possible.
I bought a set of 4 into 1 style headers but now im not sure if i can use them because of all the emmisions bits sticking out all over the place.

Id like to know which vacum lines i can do away with which ones ill need to plug or cap and what i can use to cap them.

I also have this weird pipe coming out of the thermostat housing that i havent seen on any other car. I think its funneling exhaust into the intake. Can it be taken off and plugged.

Any how you guys get what im asking.

Has anybody had any experience with this?

1977 b210
U.S.A. "california model" i think due to all the EGR crap.
A14 motor