Plumbing washer drain and sink in garage, really need help

[dohc97]

I am plumbing a sink into what was an existing washer drain, i am trying to make sure i plumb this properly. I mocked up some of the configurations i found on here but i dont seem to have the space, i would appreciate help. first picture shows how much space i have between studs, drain is towards the middle, cast iron pipe with adapter.

 

[dohc97]

this is the configuration i was going to go with, washer box on right side, sink on left but i do not have room for it

 

[Sponsor]

 

[dohc97]

I found this picture on this same site, am i allowed to do this in texas?

 

[GReynolds929]

Can the washer trap and standpipe go in the 8" bay?

 

[dohc97]

Yes but the vent would not fit? That is actually where I intend for the washer box to go