May need a head gasket.
https://www.facebook.com/marketplace/item/3178404485801734
“Don’t have time for it anymore and need shed space. I believe it needs a head gasket. Has oil in coolant. *Engine DOES RUN* Has original hard top and doors and rear hatch, never got around to finish painting them. Has a new T-90 3spd transmission and Kaiser oil filter kit. Have a new carb in box still. Put a new one on last year and accidentally ordered a 2nd. Has ambient lights, grille lights and entry lights. Recently put a tachometer on it as well. New Distributor, Wires and MSD coil. Was 6V, 12V converted. Comes with box of original parts as well. I’m sure I’m forgetting some things. $7000 obo. Price negotiable.”