Generation IV External Engine - ls3 intake Vacuum port question

Im putting a lq4 with ls3 heads and ls3 intake in a 2000 camaro ss I'm wondering where do i hook up the HVAC vacuum line now since there isnt one on the ls3 intake. it kinda looks like theres a spot for it on the back of it but has like a casting over it?

have you considered a vacuum block... possibly a "T" or "Y" fitting btw the brake booster and manifold...

Im putting a lq4 with ls3 heads and ls3 intake in a 2000 camaro ss I'm wondering where do i hook up the HVAC vacuum line now since there isnt one on the ls3 intake. it kinda looks like theres a spot for it on the back of it but has like a casting over it?

You can open up the one on the back with a drill and then hook your vacuum line over it.