Monark 2 Forks on a 40's Schwinn

You should be good with that set up the forks are 1inch, you will have to put (flip) the rockers on the outside of the forks for the hub clearance, I think they sell a bushing set for this. the stem length seems a little long but if there is extra you can double nut it or cut it. The only thing is maybe the width of the forks..the front set, I remember it being a little tight maybe 2.75 inches. I have a 19 inch moped wheel with the same tire I can measure The exact width of tire mounted in the AM. If you can get the measurements of the fork from someone as I don't have a set anymore. The sunlight deluxe springers are another option and I think they are wider.

It handled great, Better when I upgraded the springs to the larger ones they started selling. I think the monark style forks are the best bet for motorized bicycles

Considering the short head tube length of the frame, it might work better to cut down the Monark springs & have the fork tube threaded down futher to keep the geometry of the fork the same.

Also, drum brakes are tricky to install on a Monark fork because when the springs are compessed, the fork dropouts rotate a little. Securing the drum brakes arm to the forks arm will keep the dropouts from rotating properly when the springs are compressed.

A disc brake is the best way to go with a Monark fork.