On Dec 24, 9:41*am, "
wrote:

snip


Any thoughts?

Easiest way is start with saddle tee to a handy vent line. NIBCO,
others have them, Google a search for online catalogs to get the right
part number you want and go to a real plumbing distributor. Glue it
on, drill the hole, run the line with a homemade trap using a return
(180 degree) bend and you should be good to go in an hour.

Joe