I know the stock crank is good for 1200 hp. Thats when Cruz finally bent his. Stock rods have been shown to be good up to 350+ whp. Nobody has broken one yet on a FI application. As for the limitations of the fuel rail, nobody has maxxed that out either.

Jim Hahn 1996 T-Red Contour SE Reborn 4/6/04 3.0L swap and Arizona Dyno Chip Turbo Kit 364 whp, 410 wtq @ 4,700 rpm