Could be possible. Pull the head and check to be sure.
Most big bore kits have the decomp passage, so that has to be blocked if you are running the express head. Cutting the head could fit in a bigger cylinder, but it's the decomp air leak that would be a problem. So check that.
Express heads are even smaller than hobbit heads, which are notorious for not dissipating heat, but they are better than stock. They can be found precut for kits.
Check out the wiki for more information.
Also this it a pretty helpful site.