See my thinking is that if you build a big block Stroker engine you want it to run great or why not just build a stock stroke engine to cruise around. Would an 850 work, heck ya but so would a 750. As far as fuel injection man have I heard some nightmare tuning stories getting them set up right. We all can’t afford taking to to someone’s dyno and paying them to set it up for us only to have it run different in the car.