2.3 vs 3.0 ro 3.5

Ok I am new to this whole fusion thing, I am really thinking about getting one but I got a few question, first what is better in terms of performance upgrades, 2.3 or 3.0, what will or does have more aftermarket support ??? what upgrades are now available and what kind of numbers can I expect from them I am wanting a 5spd for sure, what is there if any difference with the se and the sel ?? what other engines are there going to be available ?? the awd, when will that be coming out and which engine and tranny package will come with it ??? things I am looking to know are there cams, intakes, exhausts and exhaust systems, chips, pullies, turbo set ups ?? Fuel management systems, coilovers/air ride, stage 2/3 clutches, and what not, I am reading all I can, but mostly I am finding review can get much info from there, if you got any other links for sites with info pls let me know


Thanks