I've been doing a bit of a truck update/thrash you know seats , head machined new head gasket set. Doing a thermostat swap today just because its cheap and why not. My searching on the interweb didn't return how much vacuum line I will need to go through and replace. Guess a lil' bit of a shout out to DatsunMike as he seems to know all this kinda stuff. (1986, Z24)