I'm replacing the drains in my 1930s 1 story house on a low crawl space, 1 bath, no fixture changes. Everything is wet-vented into the 2" drain that serves the back-to-back bathroom & kitchen sinks (no dishwasher). This runs 5' horizontally into the short 4" stack with the toilet on top, and the washer (beside the kitchen sink) and bathtub drain (beside the toilet) waste arms connect with this stack from opposite sides. The main drain runs horizontally out the rear towards a non-existent septic tank. I have rerouted it 45 deg. directly to the house sewer at the side of the house, run 3" PVC in a trench directly towards the old stack and within 2 ft. of it. I also ran a 2" PVC vent, the biggest I could get in the plaster wall next to the toilet, connected to the new main drain.

Here's where I'm stuck. The old 2" wet vent is opposite the present stack from the new main drain and 5' away. What do I connect to what? I have good photos I can email. Thank you.