Hy 1fletch, unfortunately there is no stock bellhousing that I'm aware of that has the bolt pattern for mounting the SM420, and the mounting points for the brake and clutch pedal shaft. The mounts on the 62 bellhousing are not compatible with your 41 chassis, that is why InMy40s suggested using a 48 - 53 bellhousing, that bellhousing would be compatible with your chassis and allow you to bolt the SM420 to your engine, the only thing this bellhousing lacks is the mount for the clutch/brake pedal shaft. InMy40s suggested that "Buffalo" could modify the bellhousing to install the clutch/brake pedal mounting holes. Your 1941 bellhousing does not have the correct mounting pattern for the SM420, the pattern it has is too small, hope that helps.