It doesn't look like it but I put in four more hours on this project today. Got a control panel fabricated and attached, made some brackets for the rectifier bridge and heat sink and got that mounted, hooked up a field control switch and rheostat, and did some rough wiring layout. Also installed a 120 VDC non-grounded outlet and fired the machine up to test the voltage and ran my DeWalt angle grinder for a few minutes. This thing will make 165 volts at full throttle so I dialed it back to about 2500 rpm to get 120 with the grinder running and it worked like a champ, hardly lugging the engine at all.
I still need to drill the panel for a 20-VDC voltmeter for the field control and a 200-VDC welding output control so I can see what I'm doing when tuning RPM (volts) and field voltage (output amperage) for welding and running power tools. I'm also considering mounting some panel plugs for the welding electrodes so I can reverse the polarity of the leads if I want to.
Still a lot of cleanup and looming to do with the wiring and some more parts to buy. Also need to fab a battery tray underneath the deck, make a permanent mount for the inductor coil, and work out some hooks on both sides of the control panel frame to store the cables.