Im looking to repower my 21ft bay boat. Being the gear head I am, Im looking to get the most speed I can where it be to the fishin hole or screwin around on the lake. The boat has a padded v and a 25" transom (no tunnel). When I repower, I am going to bolt up a 10" setback jack plate from Bobs. Question is, if all the mentioned "rated" horsepower pro xs motors are 3 liters, what's restricting the lower rated motors from the 250? If it's nothing more than an ecu swap, I may save some coin and get the 200 and mod it. Im open to suggestions on motors as well. Doesnt have to be new, but low hours and reliable is a must.

James