So james would be saying that UNLESS you can evidence by your lifestyle "'something" that shows that you are saved, probably not really saved?
Yep. Paul deals with the process of salvation (though he does deal with the application of living holy through faith). James deals with fact of one's salvation in a practical way (where the rubber meets the road as the expression goes), while John brings both together to reveal how it all looks together. Paul's main emphasis shows faith and not works brings one unto salvation, but James illustrates how one's salvation brings forth the actions that are a natural accompaniment to salvation.
Does Paul not state -
It is by grace we are saved through faith, it is a gift not of works so no one can boast.
Does James also not state regarding the kind of faith that is saving (verses empty or vain faith that produces nothing) - One says I have faith, and I say I have works. Show my your faith without works and I will show you my faith through my works... Don't you know oh vain man, that faith without works is a dead faith... you see then how man is justified by works and not faith only.
The key here is that faith is belief in action, and James uses Abraham to point to the fact that faith apart from action (acting upon what you believe) is no faith at all - (I tell people that if you don't act/live according to what you say you believe, it isn't really faith but "opinion").
The point of both writers (in various ways) is that no man who claims to have faith will not act in accordance to what they believe. If they do, it is a vain or empty faith.. which is much the same as saying their words are as empty as the life they live.
Does not Paul state much the same thing in saying - if there is no resurrection, then our faith is in vain [empty]. While of course we can not cause our own resurrection, the point is still made.. if there is no action accompanying our faith it is a dead, having no life, no power, and therefore we have received no salvaiton
Did not Jesus state in Mat 5, regarding those who were believers and that how they lived would prove whom they served and were sons and daughters to, - that they may see your good works and glorify your Father which is in Heaven.