I was thinking about trying to put in 2 ssa fcons when they come out. I think they said they would be 600watts rms a piece. I drive '97 corolla with stock alt and a run-of-the-mill battery. The stock alternator is 70-80 amps i believe. 1200w would most likely be too much for the electric even with the big 3 and a new battery? I cant find any specific h/o alternators for my car. Not to mention that I probably couldn't afford to buy an expensive one and have it put in. I may just stick with dcons if this is the case.

You should be fine, I'd either upgrade the front batter or add a second smaller battery in back. When it comes to fruition monitor your voltage and go from there.