3M panel adhesive seems to have the same density and hardness (or lack thereof) as the original steering wheel material. It is a 2 part product and will stick to the material after you gouge out and clean the cracks. It sands exactly like the original material which is a true pleasure compared to epoxy or J-B Weld.

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission