Some years ago I came across some Specsheets about OLD airplanes. This may have been from the 30's, One was a fibergalass (I think) twin with engines small enough I'm sure flight would not continue on just one.
Perhaps 65-125 Hp?
The design owner was a engineering firm from the Tucson Az area who just happened to put the rights to it up for sale just after I found the sheet.
I think only one or two were ever made.
After all these years Im wondering what ever became of it and if anyone ever took on the project?

It seems like it was a high wing 4 seater with the engines embedded in the wing.

If it was in the 1930s it probably wasn't fiberglass. There is a newer composure seasonable design called the Gweduck. You can see the detail here: https://www.gweduck.com/index.html

Seems like it was 30s or 40s definitely not the gweduck.
Old enough a twin didn’t need a engine out Climb rate.