I've been sorely tempted to pick one of those up and put a full size buttstock on it. Always thought that'd make a neat truck gun.
Had the same thought, and by Marlin's dimensions the difference is only 1-1/2 inches. So I picked one up and ordered the full-sized 336A recoil pad, and the length comes out almost perfect as the 336 with the hard rubber buttplate. Haven't shot mine yet, it's still boxed up because I have other .30-30's right now....