7/82 was the last from the factory, but any 22R up till 8/84 will accept a dual row kit, say you get a 84 block, all you need to do to put a dual row on that engine is buy a timing kit for a 20R, then bolt it on
![Thumbs Up :thumbs:](https://board.marlincrawler.com/Smileys/marlin/thumbs.gif)
after 8-84 the deck height and the timing covers where different