:Responding to your question at  
 :My involvement with this article is relatively recent. I did make some changes which I felt were necessary to keep the article from being clearly wrong and to elaborate where there is clearly only one possible choice (as with the units), but I cannot affirm the correctness of what is there. I have serious doubts about whether GEM is a reasonable approximation to GTR. 
 :I try to stick to SI units, partly because I think that the multiplicity of systems of units is one of the things which makes it hard to understand electromagnetism. If you want to add the GEM and Maxwell's equations in Gaussian units in another section, I will not oppose you. But please do not remove the SI version of the equations.