cmcanulty

I have a 16 speed road bike that is way overgeared, 53-42 on front. 11-30 rear. I would like to use the 42 as the outside ring and add a 22 ring with making or buying a converter. It is a nice Shimano 105 crankset. It this doable? I am willing to tinker. I spin fast and use very low gears. I know the 42F and 11R is high enough as it usually too high for me even with a tail wind.