1950 truck chassis swap

Do you guy's who have done this know if the D150 cab is bolted to the frame or welded on? Thanks!

Bolted to the frame mounts, 6 cab mount bolts total. 2 on the Core Support, 2 on the Front Floor Pans (where your feet would rest) and 2 at the rear (pretty much behind the seat).

The frame mounts are riveted to the frame.