Wondering what i can do to see what kind of internals i have like what compression rotors... I currently have a 4 port 13b in my 86 base. I took it out of an 87 gxl. It has characteristics like capped coolant lines clamped off oil line (for turbo)? no egr- there isnt even a place for it. And there are actuators like a 6 port but there is nothing to connect them to. Im trying to find out without tearing it apart. - thanks Gabe

 

check the block for serial numbers. smart one!!