A while back, someone (Mas?) posted success using a John Deere Pony Coil in a Lauson Twin. I can’t find the details, it might have been on the old board.
Also, any chance you could stuff two of these on the original laminations?
https://www.ebay.com/itm/262831814496?hash=item3d31ff3760:g:WHwAAOSwImRYk7EM
A last resort would be to keep the original Lauson primary winding in place and mount a couple of OMC universal coils somewhere else on the motor. Wire the three primary circuits in series and you might get lucky. I’ve done this with one OMC coil and a Bendix Scintilla primary and it worked, but I’ve never tried two on the same primary.
Tom
