I've got a 5/76 that should be very similar to your 77 in terms of emissions components. Mine is virtually in tact minus the air pump, but I was able to pass emissions many years ago without it (I've got collectors plates so I only had to pass emissions once). All of the other parts are there as far as I can tell, although I haven't done a complete audit and am not an expert with all the components. But I'd be happy to pop my hood and compare notes. I do have the engine and body FSMs which cover some of the emissions components, but I don't have the emissions specific manual. I'm out Arapahoe in eastern Boulder, so we're fairly close.
1976 FJ40 - green and mostly stock
1996 FZJ80 - not so stock