I think for the Marine A1, you still want the A1 Era kit and just leave off the Era. I don’t recall why though I think it is the air box is different for the Marine then the Army by that time. The A1 Era dozer (new 02142) would also work for a Marine tank in ODS. You see one dozer in HP’s last photo.
Now, the US Air Force did have two M60A3 dozer tanks in the ODS attached to the 401st TFW (P) EOD in Qutar. There is markings in the box, just not enough and you also needed the ribbed wheels (aluminum) and the kit only provides slick (steel). Panzer Art sells a set of ribbed wheels or certain AFV Club kits have both sets.
I picked up another A1 Era and A1 Era dozer kits myself.
HTH