MSP's do not have a vacuum block stock, but as soon as you get a boost gauge its a good idea. i dont remember the vacuum routing offhand but if i remember correctly there is one T for the BOV off the WGA line.
for those wondering, i will be installing mine on the brake boost line, and will run the BOV and boost gauge on it for now. there may have been one more thing but again can't recall. once i get an EBC and EMS those will fill out the ports... the WGA will be on a dedicated line from the IM.
brake boost in -0000-brake boost out
BOV/BPV ------|| ||
EBC ----------- | ||
EMS -------------||
boost gauge-------|