Highly doubtful, because the upper part of the two hammers are entirely different shapes and configurations. I suppose if someone did a lot of cutting and welding they might create something, but as Jim said you'd have to look over both hammers and compare them.
I have examined a lot of "open top" Colt cap-lock and cartridge converted revolvers, as well as a fair number of S.A.A's, and this is the first time I've heard this proposal.
However years ago some of the fast-draw folks that were into fanning would cut and bend the hammer spur to make a more vertical profile. If that is what you have in mind, yes - it can be, and has been done.
However I do not recommend fanning or otherwise speed shooting an S.A.A. unless it has gone through some major modifications by a gunsmith specializing in this work.