carb vacuum and pcv?

[twin_turbo_mk3]

hi

this is my first hot rod project so the body is a datsun with a 302 motor that is converted to carb.

the intake is performer rpm(not airgap)
carb is holley 4160 600cfm vacuum seconday double pumper.

my first question is i need a vacuum port for the brake booster.
the intake has a hole already on the back(looking from the front of motor) its 3/8 npt. can i connect that to the brake booster? will it be a good source of vacuum?

second question is routing the pcv. im using two EFI valve cover(the one with filler) so both my valve cover has a nipple for the pcv. and the carb has 1 big nipple on the base plate wich from what i read is for pcv??? is this true? if it is can i connect both valve cover nipple to a "T" and connect it to that port?

and lastly this is just to tripple check. since the carb has 3 vacuume nipple 1 large(wich i think is for pcv) 2 small one. did i connect it right?
1. the small nipple on the body of the carb i connected to the 85 mustang dizzy vacuum nipple.
2. the other small nipple i connected to my mallory fuel pressure regulator. wich is set at 4.5 with vacuum off.

^^ any help would be great. thanks

 

[Liv2roc]

the 3/8 npt goes to the vacuum tee on the firewall then the brake booster goes to the tee. but if you have no other accessories for vacuum then you can run the brakes straight to the 3/8 npt. distributor vacuum goes to the small carb nipple with no vacuum at idle.