Yeah they are expensive but awesome starters and withstand heat very well. I've heard a lot of shady things about Kinetics as starters and I would definatly say no to Shuriken as a started unless you want to be stranded at some point. I'd just go a single D3400 in the front and big III with that alternator you should be fine I ran a crappy AP1500 @ .5 on stock alt/batt with no big III and only dropped into the high 11's. Now by no means is that GREAT but I never blew anything after a couple months of use like that.thats what im trying to get at. group 65 from XS to fit my stock location is like $280.