TeleFlex is THE name in hydraulic steering. The basic BayStar system will only work on a motor up to 150 HP. So with a 200+HP you will need the SeaStar system. Cabelas lists the system for about $1200. Installation, well if you do it, just blood, sweat, and tears. If the shop does it, hour by hour cost.
Either way - YES you definitely want the SeaStar system on the boat it is MUCH more pleasurable to operate!!
Capt. Craig Copeland
2013 Nautic Star 2110 Shallow Bay Boat
Humminbird HELIX 12 CHIRP MEGA SI GPS G2N
Nautic Star Boats Pro Staff (nauticstarboats.com)
Redneck Fish'n Jigs Pro Staff (redneckfishn.com)