You can. It's a simple matter of a little fly cut on the top corner of the cylinder walls to allow the 2.02 valves to clear. I did it and put in some 13.5:1 pistons, which were available back in the day, to regain some compression from the huge head volume. There is no low end whatsoever with the W2s on that small bore. It is fun after 4000 RPM though!!
