I'm sorry - I may have not stated the question correctly - I have these boxes - (I bought a box full of these at salvage really cheap) - the guy I got them from called them a handy box, so being a newbie I didn't know any better.
They actually look pretty decent with a RACO cover for regular outlets (1 duplex receptacle), but to pass inspection here I need a GFCI outlet in the first outlet on the circuit.
I guess I may need to put a 4" box in for the first outlet - unless that Hubbell 862 will cover it, but the GFCI may be a tight fit in that box anyway.
At least I have a couple of options.
Thanks - always good answers here.