1933 model B front engine mounts

[FrankWest]

The front engine mount is connected to the frame with one large bolt on each side of front frame. I removed the castle nuts, no cotter pin present assumed
disintegrated. Question... Is the frame threaded? I assume not......
Need to remove both bolts to remove engine mounting bracket to gain access to Timing gears. Also the rubber shock are solidified///no good.... will replace.