I'm sure someone else will chime in. The easiest way would be to use a weber but it looks like you're doing OK to me. I would keep using the stock distributor, no reason to change that. EGR and air pump block offs, plug your unused ports and you should be good to go. There are a bunch of good write ups on de-smogging the 22r carb. Here is one:
http://www.yotatech.com/f114/22r-desmog-tutorial-264405/ 20r carb is pretty similar, maybe even a few less things to mess with.
