I'm glad you kept that 'pipe' gismo that goes across from the bracket you made on top of the frame to a ball on the motor. That 'pipe' takes the problems out of having a vertical rod going from a hanging clutch pedal to the throw-out bearing lever. When your motor mounts get stressed up under torque, that side of the motor and transmission rises, but the cab does not, so either the vertical rod has to get shorter quickly or the clutch will engage abruptly. Kenworth trucks suffered this poor engineering all through the seventies and first part of the eighties. Abrupt take-offs are only good on TV or the movies. Real truckers don't do 'abrupt', well.
Ford had engineered this little pipe gismo to counteract this physics problem. It looks like you were smart enough to realize that.
Keep up the good work. Bang-up Job, ZZ. [cl[cl