fitting boost gauge, where to connect to?

b18c is that for a 3l or are you running a dawes and needle valve on a 4.2? really for boost gauge all id do is put a t piece between the 2 ends of the hose that goes to the turbo actuater. if its like my cousins turbo which is should be then the hose just runs from boost side of turbo to acutater. hose is about 3" long. and almost dead straight. hope this helps